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EP2060355A2 - Lame de scie à pierres - Google Patents

Lame de scie à pierres Download PDF

Info

Publication number
EP2060355A2
EP2060355A2 EP08167962A EP08167962A EP2060355A2 EP 2060355 A2 EP2060355 A2 EP 2060355A2 EP 08167962 A EP08167962 A EP 08167962A EP 08167962 A EP08167962 A EP 08167962A EP 2060355 A2 EP2060355 A2 EP 2060355A2
Authority
EP
European Patent Office
Prior art keywords
saw blade
teeth
layer
blade according
shaped
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP08167962A
Other languages
German (de)
English (en)
Other versions
EP2060355A3 (fr
EP2060355B1 (fr
Inventor
Jörg H. Dr. Kullmann
Werner Dr. Kwanka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wikus-Saegenfabrik Wilhelm H Kullmann & Co GmbH
Original Assignee
Wikus Sagenfabrik Wilhelm H Kullmann GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wikus Sagenfabrik Wilhelm H Kullmann GmbH and Co KG filed Critical Wikus Sagenfabrik Wilhelm H Kullmann GmbH and Co KG
Priority to PL08167962T priority Critical patent/PL2060355T3/pl
Priority to SI200831174T priority patent/SI2060355T1/sl
Publication of EP2060355A2 publication Critical patent/EP2060355A2/fr
Publication of EP2060355A3 publication Critical patent/EP2060355A3/fr
Application granted granted Critical
Publication of EP2060355B1 publication Critical patent/EP2060355B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D61/00—Tools for sawing machines or sawing devices; Clamping devices for these tools
    • B23D61/12—Straight saw blades; Strap saw blades
    • B23D61/121—Types of set; Variable teeth, e.g. variable in height or gullet depth; Varying pitch; Details of gullet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D61/00—Tools for sawing machines or sawing devices; Clamping devices for these tools
    • B23D61/12—Straight saw blades; Strap saw blades
    • B23D61/14—Straight saw blades; Strap saw blades with inserted saw teeth, i.e. the teeth being individually inserted
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
    • B28D1/12—Saw-blades or saw-discs specially adapted for working stone
    • B28D1/127—Straight, i.e. flat, saw blades; strap saw blades

Definitions

  • the invention relates to a saw blade with a band-shaped base body and unrestricted teeth with geometrically determined cutting edges, the teeth having molded bodies made of hard metal connected to the base body.
  • the saw blade has a band-shaped body, so it is designed as a saw blade.
  • the band-shaped base body has seats which are intended to receive shaped bodies made of hard metal. In general, these seats are made by milling the band-shaped body.
  • the shaped bodies made of hard metal are produced as separate elements and permanently connected via the seats with the band-shaped base body.
  • the shaped bodies of hard metal have geometrically determined cutting edges and thus form the teeth of the saw blade.
  • a saw blade is from the German patent application DE 42 00 423 A1 known.
  • the saw blade is designed and intended for machining metallic materials. It has a base body with unrestricted teeth with cutting edges, which are provided in repetitive cycles.
  • the teeth may consist of the moldings connected to the body made of hard metal.
  • Each cycle consists of at least one tooth group consisting of at least three teeth with height and width graduation.
  • the teeth may be from tooth to tooth decreasing height and thereby increasing width. All teeth are formed symmetrically to a longitudinal center plane through the body.
  • the teeth have geometrically determined cutting edges, ie each tooth has a geometrically determined shape with rake angle, clearance angle, etc.
  • the effective cutting or cutting portions of all teeth are each formed by a kinking cutting edge whose inner portion is approximately perpendicular to the longitudinal center plane and connect to the outwardly in a symmetrical arrangement to the base towards inclined chamfers.
  • the cutting edge thus has corners both in the region of the kinking cutting edge and at the transition between chamfer and flank.
  • the cutting edges on each tooth can be changed in shape by increasing the number of breakpoints.
  • the number of teeth in the cycle is at least 2.
  • the teeth may consist of the moldings connected to the body made of hard metal.
  • the two teeth have a height and a width grading and form a first group of teeth.
  • an effective cutting edge is formed in the form of a kinking line.
  • the teeth of the second group of teeth are identical.
  • the teeth of the second group of teeth represent the teeth with the largest width and the lowest height.
  • the teeth of the first group of teeth and the second group of teeth can be arranged alternately.
  • the invention has for its object to provide a saw blade, which provides a high cutting performance without large loss of material, flexible for the production of workpieces with different dimensions and is suitable for sawing stone.
  • the shaped articles for sawing stone thus have a support made of hard metal and a layer forming the cutting edge, wherein the layer has a hardness of at least 5,000 HK.
  • wire saws are known in which a circulating cable is used, which is covered with cylindrical segments, wherein the segments are coated with diamond.
  • Such wire saws provide a low cutting performance, can be used only with relatively low feed and work in stone a relatively wide cutting channel, so that in such a separation work, a relatively large loss of material occurs.
  • the producible cuts are rarely straight and provide a relatively large roughness on the cut surface.
  • horizontal sawing saws are used for sawing stone, which are designed and arranged in their basic structure in itself, as is known in gate saws for wood.
  • the saw blades are diamond-strewn, so there are no geometrically determined cutting edges.
  • the disadvantage of such gang saws is determined by the low flexibility and the slice thickness predetermined by the setting.
  • a tool for milling grooves and folds is from the European patent application EP 0 590 408 A1 known. This document thus shows and describes a milling cutter. An indication of the formation of a saw blade does not contain this document.
  • a saw blade is from the European patent application EP 0 715 919 A1 known. This document shows a positive connection of the use of the saw blade via a clamping or plug connection with the base body.
  • the inserts can have a surface hardness of at least 1200 HV 30.
  • a drill is from the German patent application DE 196 52 208 A1 known. This document relates to a drill, in particular for drilling boreholes in hard material, such as Stone. An indication of the formation of a saw blade does not contain this document.
  • the invention relates to a saw blade with a band-shaped base body and unrestricted teeth with geometrically determined cutting edges, the teeth having molded bodies made of hard metal connected to the base body.
  • the shaped bodies have a hard metal carrier and a layer forming the cutting edge for sawing stone, the layer having a hardness of at least 5,000 HK. So it is a stone saw blade.
  • the new layer is therefore substantially harder than the carrier of the shaped body of the hard metal.
  • the shaped bodies form the teeth of the saw blade and have a geometrically determined shape with a cutting edge, cutting edge, rake angle, clearance angle, etc. It is sufficient if the layer on the shaped bodies made of hard metal is dimensioned comparatively thin. Important is the extremely high hardness, which is achieved only by a few materials.
  • the layer may consist of polycrystalline diamond (PCD) or of cubic boron nitride (CBN). Such materials are not used in saw blades.
  • the layer thus has a hardness of at least 5,000 HK (Knoop hardness, see also DIN EN ISO 4545), HK - HV (Vickers hardness) being valid for small loads.
  • the layer may be provided on the surface of the carrier of the molded body facing forwards in the direction of travel of the strip.
  • the layer forms a rake surface with which the material to be removed and the removed material at least partially come into contact. This includes the cutting edge of the rake face.
  • Bending cutting edges are therefore preferably not used and corners or sharp Abknickabil in the cutting edge are omitted. This may relate in particular to the transition between the cutting edge and the back surface but also to the transition to the flank surfaces of the tooth.
  • the round shape avoids corners. It has a rounded shape, which can be formed from adjoining elbows, even with different radii. In a special form, the round cutting edge can be circular.
  • the shaped body of the hard metal carrier and the layer of high hardness can be defined positively held on the band-shaped body in a milled seat defined. This refers at least to both the radial and the tangential direction.
  • the permanent connection between the moldings made of hard metal and the band-shaped body can be done by common types of connection, such as welding, soldering and the like.
  • the geometrically determined cutting edges for the new saw blade for cutting stone can in themselves have all the features and advantages of saw blades for cutting metallic materials from the patent applications DE 42 00 423 A1 and or DE 199 63 396 A1 the applicant are known.
  • Each cycle should have at least one tooth group of at least three teeth, with a height grading and a width graduation, wherein the height gradation may decrease from tooth to tooth, and the tooth width may also increase from tooth to tooth.
  • a plurality of tooth groups to be intermittently nested on one base body, but at least the teeth of one tooth group should have rounded cutting edges.
  • Another group of teeth may also have rounded cutting edges, but only teeth of identical geometric shape in the group.
  • the teeth formed by the shaped bodies can have a negative rake angle, in particular approximately between -25 ° and 0 °.
  • the clearance angle can be 0 ° to 15 °.
  • Such a clearance angle refers to the roof surface of a tooth and / or on the formation of the flanks.
  • the teeth formed by the moldings have a positive rake angle, but then with a negative protective bevel of about 0 ° to -25 °. Also, it is advantageously achieved a hammering fragmentation of the rock material during sawing.
  • the rake surface may have a hard material coating on the layer of each shaped body.
  • Aluminum titanium nitride, titanium aluminum carbonitride, chromium nitride or the like are particularly suitable for this purpose.
  • the coating can also be applied as a multilayer structure. It should usually extend over the rake face and also over the cutting edge and part of the flanks on each molding.
  • This in Fig. 1 partially illustrated example new saw blade 1 has a band-shaped base body 2, which has a rectangular cross section in a known manner.
  • the one side of the main body 2 shown carries teeth 3.
  • the teeth 3 are unrestricted and preferably formed and arranged symmetrically to the longitudinal center plane 14 of the base body 2.
  • the teeth 3 have a greater width than the main body. 2
  • the teeth 3 are formed or formed by shaped bodies 4.
  • Each shaped body 4 consists for the most part of a carrier 21 made of hard metal and has on one side or surface a layer 5 which consists of a material which is harder than the hard metal of the carrier 21 of the shaped body 4.
  • the hardness of the layer 5, which is permanently bonded to the hard metal of the carrier 21 of the molded body 4, is at least 5,000 HK (Knoop hardness, see DIN EN ISO 4545). Suitable materials which exhibit such exceptional hardness are in particular polycrystalline diamond (PCD) or cubic boron nitride (CBN).
  • the moldings 4 with the layers 5 are inserted into seats 6.
  • the moldings 4 are permanently connected to the seats 6 with the material of the base body 2, for example by welding or soldering.
  • the seats 6 are shaped so that each shaped body 4 is placed and held positively in two directions extending at least approximately at right angles to each other.
  • the placement of the molded body 4 is carried out so that the layers 5 point in the direction of tape travel 7.
  • Fig. 1 It can be seen that the shaped bodies 4, which form the teeth 3, are arranged with a negative rake angle 8.
  • the rake angle 8 of all teeth 3 may be formed coincident. But it is also possible that the negative rake angle 8 vary from tooth 3 to tooth 3, so that in this way groups of teeth from z. B. three consecutive teeth 3 are formed, with the negative rake angle repeat 8 at the respective teeth 3 in each group. Negative rake angles 8, in particular between -25 ° and 0 °, are used.
  • the teeth 3 can also be arranged with variable pitch.
  • the teeth 3 can also be arranged in a height and / or a width graduation.
  • Each tooth 3 has on the running in the direction of tape 7 forward facing free surface of the layer 5, a clamping surface 9, which merges at its upper portion in a cutting edge 10 and ends in this cutting edge 10.
  • the upper portions of the rake surface 9 and the cutting edge 10 together form a respective cutting edge 11.
  • the forming the teeth 3 moldings 4 are arranged with a clearance angle 12, so that there is a back rake surface on each tooth 3.
  • Fig. 2 shows the relative design of three teeth 3 in their mutual projection against the tape running direction 7 in the region of the cutting 11. It is a tooth 3 1 recognizable, the counter to the strip running direction 7, a second tooth 3 2 follows, in turn, from a tooth 3 3 opposite the tape running direction 7 is followed. It can be seen that a group of teeth is preferably formed from at least three teeth 3 1 , 3 2 , 3 3 . This group is repeated in cycles. Each cycle has at least one group, ie three consecutive teeth 3. However, other forms of teeth 3, groups and cycles are possible.
  • the tooth 3 1 has a rake surface 9 1 , which merges at its upper end into a cutting edge 10 1 .
  • the cutting edge 10 is formed and arranged in a circular arc and goes to form each corner on the right and left in each case a flank 13 via.
  • the flanks 13 and the associated flank angles coincide on all teeth 3 1 , 3 2 and 3 3 and coincide in the projection.
  • the following tooth 3 2 has a cutting edge 10 2 .
  • the shaping reveals that the cutting edge 10 2 is composed of a series of radii so that overall the rounded shape shown results.
  • the cutting edge 10 2 In the central region, that is, following the longitudinal center plane 14, the cutting edge 10 2 has a straight piece 15 2 , in which the radius is therefore infinitely large.
  • a respective elbow 16 2 At this straight piece 15 2 is followed by a respective elbow 16 2 , which has a finite radius.
  • Each elbow 16 2 finally goes into another elbow 17 2 over.
  • the transition between the elbows 16 2 and 17 2 is preferably carried out with a common tangent.
  • the elbow 17 2 runs into the flank 13 almost without a break point.
  • the third tooth 3 3 in the tooth group has a rounded cutting edge 10 3rd
  • the cutting edge 10 3 is also composed here of a straight piece 15 3 and two elbows 16 3 and 17 3 together.
  • the elbow 17 3 is arranged and is determined by a radius selected so that it enters tangentially into the flank 13.
  • the transition point is slightly below the point at which the tooth 3 3 has its greatest width.
  • At least one of the teeth 3 1 , 3 2 and 3 3 has such a shape as described with reference to the tooth 3 3 .
  • Fig. 2 is also a height and width gradation of the teeth 3 1 , 3 2 and 3 3 recognizable.
  • the tooth 3 1 is the tooth with the largest height and smallest width.
  • the tooth 3 3 is the tooth with the lowest height and largest width.
  • the tooth 3 2 lies in between.
  • the order of the teeth 3 1 , 3 2 and 3 3 in the direction of belt 7 is not mandatory.
  • the teeth 3 1 , 3 2 and 3 3 3 may have the same or different rake angle 8.
  • the clearance angle 12 at the back of the teeth can also vary.
  • Each tooth 3 1 , 3 2 and 3 3 3 preferably operates only with the region of its cutting edge 10, in accordance with the projection Fig. 2 survives freely. In this way, strips of material are eliminated in the cutting channel, as is already the case in the prior art described above. The clearing out of the material strips However, it does not spanwise, but more by hammering material fragmentation by the individual strip-shaped areas of the rock material are smashed and smashed in the cutting
  • the molded body 4 has the carrier 21 made of hard metal, which carries on one side the layer 5 of PCD or CBN.
  • the layer 5 is thinner, generally substantially thinner, than the carrier 21 of the shaped body 4.
  • the shaped body 4 forms with the free surface of the layer 5, the rake face 9, which merges at its upper end in the cutting edge 10, which, as Fig. 4 shows, is formed here arcuate.
  • the molded body 4 has a recess 18 and a channel whose width corresponds to the thickness of the band-shaped base body 2. Taking into account the design and arrangement of the seats 6 in conjunction with the recess 18 is thus recognizable that each shaped body 4 is defined in all three spatial directions positively secured to the base body 2.
  • Fig. 5 shows a further embodiment of the saw blade 1 with its base body 2 and three teeth 3 1 , 3 2 and 3 3 in the teeth group. It is understood that the number of teeth 3 in the group of teeth may also be greater or less than three.
  • the teeth 3 1 , 3 2 and 3 3 are arranged here with a positive rake angle 19.
  • the rake angle 19 of the individual teeth 3 1 , 3 2 and 3 3 can be designed to match or even varying. The same applies to the division.
  • the protective bevel 20 extends within the layer 5.
  • the protective bevel 20 also results in a negative angle in the region of the cutting edge 10, so that even with this embodiment, the intended hammering and shattering effect of the cutting 11 on the rock material is also possible.
  • Areas of the rake surface 9 and / or the protective bevel 20 including the cutting edge 10 of the layer 5 may be provided with a hard coating 22. This is for clarity only on the tooth 3 3 in Fig. 5 shown.
  • the hard material coating 22 may also extend over part of the flanks 13 of the teeth 3.
  • the hard material coating 22 may in particular consist of aluminum titanium nitride, titanium aluminum carbonitride or chromium nitride.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
EP08167962.3A 2007-11-15 2008-10-30 Lame de scie à pierres Active EP2060355B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL08167962T PL2060355T3 (pl) 2007-11-15 2008-10-30 Brzeszczot piły do kamienia
SI200831174T SI2060355T1 (sl) 2007-11-15 2008-10-30 List Ĺľage za kamen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007054601A DE102007054601A1 (de) 2007-11-15 2007-11-15 Sägeblatt mit einem Grundkörper und Zähnen mit Schneiden

Publications (3)

Publication Number Publication Date
EP2060355A2 true EP2060355A2 (fr) 2009-05-20
EP2060355A3 EP2060355A3 (fr) 2011-06-22
EP2060355B1 EP2060355B1 (fr) 2014-01-08

Family

ID=40348071

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08167962.3A Active EP2060355B1 (fr) 2007-11-15 2008-10-30 Lame de scie à pierres

Country Status (8)

Country Link
US (1) US20090126712A1 (fr)
EP (1) EP2060355B1 (fr)
JP (1) JP5582695B2 (fr)
CA (1) CA2643830C (fr)
DE (1) DE102007054601A1 (fr)
ES (1) ES2450748T3 (fr)
PL (1) PL2060355T3 (fr)
SI (1) SI2060355T1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2520389A1 (fr) * 2011-05-06 2012-11-07 WIKUS-Sägenfabrik Wilhelm H. Kullmann GmbH & Co. KG. Lame de scie destinée à scier des profils creux et moulés
EP2060356B1 (fr) * 2007-11-15 2017-06-21 WIKUS-Sägenfabrik Wilhelm H. Kullmann GmbH & Co. KG Lame de scie dotée d'un corps de base et de dents ayant une lame de coupe
EP4041482A4 (fr) * 2019-10-10 2023-12-06 The M.K. Morse Company Procédé de revêtement des dents d'un outil de coupe

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DE102010006267B4 (de) * 2010-01-30 2014-03-06 GFE - Gesellschaft für Fertigungstechnik und Entwicklung Schmalkalden e.V. Haftfestes mehrlagiges Schichtsystem und Verfahren zu dessen Herstellung
DE102010012032B4 (de) * 2010-03-19 2015-10-08 GFE Gesellschaft für Fertigungstechnik u. Entwicklung Schmalkalden e.V. Mehrlagiges Schichtsystem auf PKD-Werkstoffen
US10189099B2 (en) 2010-04-22 2019-01-29 Milwaukee Electric Tool Corporation Saw Blade
CA2797111C (fr) 2010-04-22 2015-06-09 Milwaukee Electric Tool Corporation Lame de scie
USD841417S1 (en) 2011-04-22 2019-02-26 Milwaukee Electric Tool Corporation Saw blade
CN102328356A (zh) * 2011-06-20 2012-01-25 镇江市港南电子有限公司 一种硅片切割的主辊
JP6339764B2 (ja) * 2013-02-25 2018-06-06 兼房株式会社 丸鋸
FR3007311B1 (fr) * 2013-06-19 2015-12-11 Mecachrome France Dispositif et procede de decoupe de pieces en materiau metallique ou composite et pieces obtenues avec un tel procede.
US20160158858A1 (en) * 2014-12-08 2016-06-09 Irwin Industrial Tool Company Recip blade
US10814414B2 (en) 2015-11-02 2020-10-27 Milwaukee Electric Tool Corporation Saw blade
US10532412B2 (en) 2016-09-23 2020-01-14 Milwaukee Electric Tool Corporation Hole saw arbor assembly
EP3354385B1 (fr) 2017-01-06 2020-05-27 Milwaukee Electric Tool Corporation Scie-cloche
US11413693B2 (en) 2017-05-16 2022-08-16 Milwaukee Electric Tool Corporation Saw blade
EP3624977B1 (fr) 2017-05-18 2022-07-06 Milwaukee Electric Tool Corporation Procédés de fabrication de lames de scie
USD973733S1 (en) 2017-08-15 2022-12-27 Milwaukee Electric Tool Corporation Hole saw
JP7097242B2 (ja) * 2018-06-25 2022-07-07 株式会社アマダ 鋸刃

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DE4200423A1 (de) 1992-01-10 1993-07-15 Kullmann Wikus Saegenfab Saegeblatt
EP0590408A1 (fr) 1992-09-29 1994-04-06 Ledermann GmbH Outil pour le fraisage de mortaises et de rainures
EP0715919A1 (fr) 1994-12-05 1996-06-12 KAMPMANN GmbH Procédé et lame de scie pour le sciage des pièces en acier
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2060356B1 (fr) * 2007-11-15 2017-06-21 WIKUS-Sägenfabrik Wilhelm H. Kullmann GmbH & Co. KG Lame de scie dotée d'un corps de base et de dents ayant une lame de coupe
EP2520389A1 (fr) * 2011-05-06 2012-11-07 WIKUS-Sägenfabrik Wilhelm H. Kullmann GmbH & Co. KG. Lame de scie destinée à scier des profils creux et moulés
US9162299B2 (en) 2011-05-06 2015-10-20 Wikus-Saegenfabrik Wilhelm H. Kullmann Gmbh & Co. Kg Saw blade for sawing hollow profiles and form profiles
EP4041482A4 (fr) * 2019-10-10 2023-12-06 The M.K. Morse Company Procédé de revêtement des dents d'un outil de coupe

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Publication number Publication date
EP2060355A3 (fr) 2011-06-22
CA2643830C (fr) 2013-07-16
DE102007054601A1 (de) 2009-05-20
PL2060355T3 (pl) 2014-08-29
ES2450748T3 (es) 2014-03-25
US20090126712A1 (en) 2009-05-21
SI2060355T1 (sl) 2014-06-30
JP2009119869A (ja) 2009-06-04
CA2643830A1 (fr) 2009-05-15
EP2060355B1 (fr) 2014-01-08
JP5582695B2 (ja) 2014-09-03

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