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GB777224A - Travelling wave electron discharge devices - Google Patents

Travelling wave electron discharge devices

Info

Publication number
GB777224A
GB777224A GB25817/53A GB2581753A GB777224A GB 777224 A GB777224 A GB 777224A GB 25817/53 A GB25817/53 A GB 25817/53A GB 2581753 A GB2581753 A GB 2581753A GB 777224 A GB777224 A GB 777224A
Authority
GB
United Kingdom
Prior art keywords
line
helix
strip
sept
finished
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.)
Expired
Application number
GB25817/53A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB777224A publication Critical patent/GB777224A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J23/00—Details of transit-time tubes of the types covered by group H01J25/00
    • H01J23/02—Electrodes; Magnetic control means; Screens
    • H01J23/08—Focusing arrangements, e.g. for concentrating stream of electrons, for preventing spreading of stream
    • H01J23/087—Magnetic focusing arrangements
    • H01J23/0876—Magnetic focusing arrangements with arrangements improving the linearity and homogeniety of the axial field, e.g. field straightener
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/14—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by electrical means
    • B05D3/141—Plasma treatment
    • B05D3/142—Pretreatment
    • B05D3/144—Pretreatment of polymeric substrates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G81/00—Macromolecular compounds obtained by interreacting polymers in the absence of monomers, e.g. block polymers
    • C08G81/02—Macromolecular compounds obtained by interreacting polymers in the absence of monomers, e.g. block polymers at least one of the polymers being obtained by reactions involving only carbon-to-carbon unsaturated bonds
    • C08G81/021—Block or graft polymers containing only sequences of polymers of C08C or C08F
    • C08G81/022—Block or graft polymers containing only sequences of polymers of C08C or C08F containing sequences of polymers of conjugated dienes and of polymers of alkenyl aromatic compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/04—Coating
    • C08J7/0427—Coating with only one layer of a composition containing a polymer binder
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J23/00—Details of transit-time tubes of the types covered by group H01J25/00
    • H01J23/02—Electrodes; Magnetic control means; Screens
    • H01J23/06—Electron or ion guns
    • H01J23/065—Electron or ion guns producing a solid cylindrical beam
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J23/00—Details of transit-time tubes of the types covered by group H01J25/00
    • H01J23/02—Electrodes; Magnetic control means; Screens
    • H01J23/08—Focusing arrangements, e.g. for concentrating stream of electrons, for preventing spreading of stream
    • H01J23/083—Electrostatic focusing arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J23/00—Details of transit-time tubes of the types covered by group H01J25/00
    • H01J23/02—Electrodes; Magnetic control means; Screens
    • H01J23/08—Focusing arrangements, e.g. for concentrating stream of electrons, for preventing spreading of stream
    • H01J23/087—Magnetic focusing arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J23/00—Details of transit-time tubes of the types covered by group H01J25/00
    • H01J23/16—Circuit elements, having distributed capacitance and inductance, structurally associated with the tube and interacting with the discharge
    • H01J23/24—Slow-wave structures, e.g. delay systems
    • H01J23/26—Helical slow-wave structures; Adjustment therefor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J23/00—Details of transit-time tubes of the types covered by group H01J25/00
    • H01J23/16—Circuit elements, having distributed capacitance and inductance, structurally associated with the tube and interacting with the discharge
    • H01J23/24—Slow-wave structures, e.g. delay systems
    • H01J23/30—Damping arrangements associated with slow-wave structures, e.g. for suppression of unwanted oscillations
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J23/00—Details of transit-time tubes of the types covered by group H01J25/00
    • H01J23/36—Coupling devices having distributed capacitance and inductance, structurally associated with the tube, for introducing or removing wave energy
    • H01J23/40—Coupling devices having distributed capacitance and inductance, structurally associated with the tube, for introducing or removing wave energy to or from the interaction circuit
    • H01J23/42—Coupling devices having distributed capacitance and inductance, structurally associated with the tube, for introducing or removing wave energy to or from the interaction circuit the interaction circuit being a helix or a helix-derived slow-wave structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J23/00—Details of transit-time tubes of the types covered by group H01J25/00
    • H01J23/36—Coupling devices having distributed capacitance and inductance, structurally associated with the tube, for introducing or removing wave energy
    • H01J23/40—Coupling devices having distributed capacitance and inductance, structurally associated with the tube, for introducing or removing wave energy to or from the interaction circuit
    • H01J23/48—Coupling devices having distributed capacitance and inductance, structurally associated with the tube, for introducing or removing wave energy to or from the interaction circuit for linking interaction circuit with coaxial lines; Devices of the coupled helices type
    • H01J23/50—Coupling devices having distributed capacitance and inductance, structurally associated with the tube, for introducing or removing wave energy to or from the interaction circuit for linking interaction circuit with coaxial lines; Devices of the coupled helices type the interaction circuit being a helix or derived from a helix
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J25/00—Transit-time tubes, e.g. klystrons, travelling-wave tubes, magnetrons
    • H01J25/34—Travelling-wave tubes; Tubes in which a travelling wave is simulated at spaced gaps
    • H01J25/36—Tubes in which an electron stream interacts with a wave travelling along a delay line or equivalent sequence of impedance elements, and without magnet system producing an H-field crossing the E-field
    • H01J25/38—Tubes in which an electron stream interacts with a wave travelling along a delay line or equivalent sequence of impedance elements, and without magnet system producing an H-field crossing the E-field the forward travelling wave being utilised
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J25/00—Transit-time tubes, e.g. klystrons, travelling-wave tubes, magnetrons
    • H01J25/50—Magnetrons, i.e. tubes with a magnet system producing an H-field crossing the E-field
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P5/00—Coupling devices of the waveguide type
    • H01P5/08—Coupling devices of the waveguide type for linking dissimilar lines or devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q11/00—Electrically-long antennas having dimensions more than twice the shortest operating wavelength and consisting of conductive active radiating elements
    • H01Q11/02—Non-resonant antennas, e.g. travelling-wave antenna
    • H01Q11/08—Helical antennas
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/30—Angle modulation by means of transit-time tube
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H2/00—Networks using elements or techniques not provided for in groups H03H3/00 - H03H21/00
    • H03H2/005—Coupling circuits between transmission lines or antennas and transmitters, receivers or amplifiers
    • H03H2/006—Transmitter or amplifier output circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M5/00—Manual exchanges
    • H04M5/04—Arrangements for indicating calls or supervising connections for calling or clearing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2327/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
    • C08J2327/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
    • C08J2327/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
    • C08J2327/06—Homopolymers or copolymers of vinyl chloride
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2429/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Derivatives of such polymer

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Signal Processing (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Plasma & Fusion (AREA)
  • Physics & Mathematics (AREA)
  • Microwave Tubes (AREA)
  • Waveguides (AREA)
  • Communication Cables (AREA)
  • Details Of Aerials (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Particle Accelerators (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)

Abstract

777,224. Travelling wave tubes. STANDARD TELEPHONES & CABLES, Ltd. Sept. 18, 1953 [Sept. 29, 1952], No. 25817/53. Addition to 776,923. Class 39(1). [Also in Group XL(b)] The line-above-a-plane transition section coupling the high-impedance helix 8, Fig. 1, with the low-impedance coaxial line 12 according to the parent Specification, is provided with a conical or tapered section 20 where it is connected to the helix. As shown, the line is a quarter-wave post 16 cylindrical except for the conical tip 20. Where it is desired to apply a separate potential to the helix the line may comprise a central conductor 21 insulated at 22 from the outer line portion 23, the whole being finished off conically. Screening members may be placed around the line to reduce radiation. When the line is a flat strip 34, Fig. 6, it is finished off with a triangular portion 36 and is separated from the plane plate 3d by a dielectric strip 35. A more compact structure may be obtained by bending the line into a right angle as shown in Figs. 8, 9. Here the inner conductor 43 of the input line 42, 43 is connected to the bent strip transition member at the bend, the tapered strip 48 being connected to the helix 56 while the straight limb 49 is earthed capacitatively by flange 50, dielectric 51 and body member 47. The ouput line 41 is similarly coupled and both lines leave the device at the same end. In a further modification with the transition section composite for separate helix potential, the part 57 connected to the coaxial line 60 is capacity-coupled through insulation 59 to part 58, which is connected at one end to the helix and at the other to capacity earth 58a, 65, 64. Dimensions of various parts of the high-frequency circuit are specified. Specification 706,958 is referred to.
GB25817/53A 1952-04-08 1953-09-18 Travelling wave electron discharge devices Expired GB777224A (en)

Applications Claiming Priority (18)

Application Number Priority Date Filing Date Title
US776923XA 1952-04-08 1952-04-08
DE316934X 1952-04-08
DE734963X 1952-07-05
US778846XA 1952-08-19 1952-08-19
US740852XA 1952-08-19 1952-08-19
US773393XA 1952-08-21 1952-08-21
US773783XA 1952-08-23 1952-08-23
US777224XA 1952-09-29 1952-09-29
US777225XA 1952-10-11 1952-10-11
US773394XA 1952-10-31 1952-10-31
DE745099X 1952-11-07
US756370XA 1952-11-19 1952-11-19
US754861XA 1953-04-01 1953-04-01
DE780806X 1953-04-18
DE771189X 1953-11-27
DE767078X 1954-04-03
US861229XA 1956-10-26 1956-10-26
US886318XA 1957-05-03 1957-05-03

Publications (1)

Publication Number Publication Date
GB777224A true GB777224A (en) 1957-06-19

Family

ID=31982865

Family Applications (20)

Application Number Title Priority Date Filing Date
GB8525/53A Expired GB766790A (en) 1952-04-08 1953-03-27 Improvements in or relating to travelling wave apparatus
GB8526/53A Expired GB734963A (en) 1952-04-08 1953-03-27 Arrangement for magnetic concentration of an electron beam in a travelling wave tube
GB21854/53A Expired GB740852A (en) 1952-04-08 1953-08-07 Means and method of supporting helical conductors
GB22494/53A Expired GB773783A (en) 1952-04-08 1953-08-14 Travelling wave electron discharge devices
GB22491/53A Expired GB773393A (en) 1952-04-08 1953-08-14 R-f coupling arrangements for travelling wave tubes
GB22493/53A Expired GB778846A (en) 1952-04-08 1953-08-14 Travelling wave tubes
GB24540/53A Expired GB776923A (en) 1952-04-08 1953-09-04 Travelling wave electron discharge devices
GB25817/53A Expired GB777224A (en) 1952-04-08 1953-09-18 Travelling wave electron discharge devices
GB26447/53A Expired GB777225A (en) 1952-04-08 1953-09-25 Travelling wave electron discharge devices
GB26450/53A Expired GB745099A (en) 1952-04-08 1953-09-25 Arrangement for magnetic concentration of an electron beam in a travelling wave tube
GB27869/53A Expired GB756370A (en) 1952-04-08 1953-10-09 Travelling wave electron discharge devices
GB29510/53A Expired GB773394A (en) 1952-04-08 1953-10-26 Magnet arrangements for travelling wave tubes
GB8924/54A Expired GB754861A (en) 1952-04-08 1954-03-26 Arrangements for coupling a coaxial transmission line to a helix slow wave structure
GB10495/54A Expired GB780806A (en) 1952-04-08 1954-04-09 Improvements in or relating to the provision of localised attenuation in travelling wave tubes
GB10496/54A Expired GB754563A (en) 1952-04-08 1954-04-09 Arrangement for magnetic concentration of an electron beam in a travelling wave tube
GB33565/54A Expired GB771189A (en) 1952-04-08 1954-11-19 Travelling wave tube
GB8858/55A Expired GB767078A (en) 1952-04-08 1955-03-25 Travelling wave tube
GB5891/56A Expired GB810267A (en) 1952-04-08 1956-02-24 Focusing magnet for long electron beams
GB33384/57A Expired GB861229A (en) 1952-04-08 1957-10-25 Radio frequency impedance matching section
GB14052/58A Expired GB886318A (en) 1952-04-08 1958-05-02 Travelling wave electron discharge device

Family Applications Before (7)

Application Number Title Priority Date Filing Date
GB8525/53A Expired GB766790A (en) 1952-04-08 1953-03-27 Improvements in or relating to travelling wave apparatus
GB8526/53A Expired GB734963A (en) 1952-04-08 1953-03-27 Arrangement for magnetic concentration of an electron beam in a travelling wave tube
GB21854/53A Expired GB740852A (en) 1952-04-08 1953-08-07 Means and method of supporting helical conductors
GB22494/53A Expired GB773783A (en) 1952-04-08 1953-08-14 Travelling wave electron discharge devices
GB22491/53A Expired GB773393A (en) 1952-04-08 1953-08-14 R-f coupling arrangements for travelling wave tubes
GB22493/53A Expired GB778846A (en) 1952-04-08 1953-08-14 Travelling wave tubes
GB24540/53A Expired GB776923A (en) 1952-04-08 1953-09-04 Travelling wave electron discharge devices

Family Applications After (12)

Application Number Title Priority Date Filing Date
GB26447/53A Expired GB777225A (en) 1952-04-08 1953-09-25 Travelling wave electron discharge devices
GB26450/53A Expired GB745099A (en) 1952-04-08 1953-09-25 Arrangement for magnetic concentration of an electron beam in a travelling wave tube
GB27869/53A Expired GB756370A (en) 1952-04-08 1953-10-09 Travelling wave electron discharge devices
GB29510/53A Expired GB773394A (en) 1952-04-08 1953-10-26 Magnet arrangements for travelling wave tubes
GB8924/54A Expired GB754861A (en) 1952-04-08 1954-03-26 Arrangements for coupling a coaxial transmission line to a helix slow wave structure
GB10495/54A Expired GB780806A (en) 1952-04-08 1954-04-09 Improvements in or relating to the provision of localised attenuation in travelling wave tubes
GB10496/54A Expired GB754563A (en) 1952-04-08 1954-04-09 Arrangement for magnetic concentration of an electron beam in a travelling wave tube
GB33565/54A Expired GB771189A (en) 1952-04-08 1954-11-19 Travelling wave tube
GB8858/55A Expired GB767078A (en) 1952-04-08 1955-03-25 Travelling wave tube
GB5891/56A Expired GB810267A (en) 1952-04-08 1956-02-24 Focusing magnet for long electron beams
GB33384/57A Expired GB861229A (en) 1952-04-08 1957-10-25 Radio frequency impedance matching section
GB14052/58A Expired GB886318A (en) 1952-04-08 1958-05-02 Travelling wave electron discharge device

Country Status (7)

Country Link
US (4) US2843789A (en)
BE (15) BE524397A (en)
CH (8) CH316934A (en)
DE (2) DE963704C (en)
FR (18) FR65473E (en)
GB (20) GB766790A (en)
NL (3) NL196187A (en)

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US3544832A (en) * 1968-07-18 1970-12-01 Rca Corp Traveling wave tube with evaporated nickel attenuator coating and method of manufacture thereof
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US4967170A (en) * 1986-02-08 1990-10-30 Teldix Gmbh Rotary waveguide switch having arcuate waveguides realized by planar faces
EP0293386B1 (en) * 1986-02-18 1992-05-13 TELDIX GmbH Microwave switch with at least two switching positions
FR2711277B1 (en) * 1993-10-14 1995-11-10 Alcatel Mobile Comm France Antenna of the type for portable radio device, method of manufacturing such an antenna and portable radio device comprising such an antenna.
GB9418028D0 (en) * 1994-09-07 1994-10-26 Eev Ltd Cavity arrangements
GB2296370B (en) * 1994-12-19 1998-07-29 Eev Ltd Travelling wave tubes
US5596797A (en) * 1995-04-03 1997-01-28 D & M Plastics Corporation Method and apparatus for making a molded cellular antenna coil
KR20190046029A (en) * 2017-10-25 2019-05-07 삼성전기주식회사 Antenna device and portable terminal including the same
CN112692542B (en) * 2020-12-31 2023-03-17 山东微波电真空技术有限公司 Automatic assembly equipment for spiral line, clamping rod and pipe shell

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FR1012374A (en) * 1949-07-27 1952-07-09 Improvements in the construction of traveling wave electron tubes
GB664663A (en) * 1949-09-01 1952-01-09 Mullard Radio Valve Co Ltd Improvements in travelling wave tubes
US2649578A (en) * 1949-12-02 1953-08-18 Bell Telephone Labor Inc Wave-guide elbow
US2749472A (en) * 1952-01-02 1956-06-05 Univ Leland Stanford Junior Travelling wave tubes

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FR68404E (en) 1958-04-30
FR68807E (en) 1958-06-10
GB756370A (en) 1956-09-05
CH317676A (en) 1956-11-30
GB810267A (en) 1959-03-11
FR68407E (en) 1958-04-30
GB773783A (en) 1957-05-01
FR65608E (en) 1956-02-29
GB734963A (en) 1955-08-10
NL98392C (en) 1900-01-01
GB754861A (en) 1956-08-15
BE519037A (en) 1900-01-01
GB773393A (en) 1957-04-24
FR66421E (en) 1957-02-27
GB886318A (en) 1962-01-03
FR65616E (en) 1956-02-29
CH334111A (en) 1958-11-15
GB745099A (en) 1956-02-22
BE545710A (en) 1900-01-01
GB777225A (en) 1957-06-19
BE523117A (en) 1900-01-01
GB771189A (en) 1957-03-27
BE521167A (en) 1900-01-01
BE522186A (en) 1900-01-01
CH330643A (en) 1958-06-15
FR65591E (en) 1956-02-28
NL95555C (en) 1900-01-01
FR65473E (en) 1956-02-21
FR66228E (en) 1956-06-05
DE963704C (en) 1957-05-09
GB773394A (en) 1957-04-24
GB780806A (en) 1957-08-07
US2843789A (en) 1958-07-15
FR69062E (en) 1958-09-22
BE523177A (en) 1900-01-01
GB776923A (en) 1957-06-12
CH329897A (en) 1958-05-15
DE1080702B (en) 1960-04-28
NL196187A (en) 1900-01-01
FR65589E (en) 1956-02-28
GB766790A (en) 1957-01-23
FR65607E (en) 1956-02-29
BE522303A (en) 1900-01-01
BE524397A (en) 1900-01-01
US2857547A (en) 1958-10-21
GB754563A (en) 1956-08-08
CH316934A (en) 1956-10-31
US2911599A (en) 1959-11-03
BE523116A (en) 1900-01-01
BE523897A (en) 1900-01-01
FR68403E (en) 1958-04-30
CH335353A (en) 1958-12-31
BE524061A (en) 1900-01-01
GB740852A (en) 1955-11-23
FR68804E (en) 1958-06-10
GB767078A (en) 1957-01-30
BE528213A (en) 1900-01-01
GB861229A (en) 1961-02-15
FR66230E (en) 1956-06-05
FR66233E (en) 1956-06-05
BE534531A (en) 1900-01-01
BE527787A (en) 1900-01-01
FR69068E (en) 1958-09-22
GB778846A (en) 1957-07-10
FR65606E (en) 1956-02-29
BE523425A (en) 1900-01-01
CH333699A (en) 1958-10-31
US2812469A (en) 1957-11-05
CH322499A (en) 1957-06-15

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