NL4987C - - Google Patents

Info

Publication number: NL4987C
Authority: NL; Netherlands

Application number

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.)

1917-12-28

Publication date

1917-06-04

1917-06-04 Application granted granted Critical

1917-06-04 Publication of NL4987C publication Critical patent/NL4987C/xx

Classifications

- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
- E21B7/06—Deflecting the direction of boreholes
- E21B7/061—Deflecting the direction of boreholes the tool shaft advancing relative to a guide, e.g. a curved tube or a whipstock

Landscapes

Life Sciences & Earth Sciences (AREA)
Engineering & Computer Science (AREA)
Geology (AREA)
Mining & Mineral Resources (AREA)
Physics & Mathematics (AREA)
Environmental & Geological Engineering (AREA)
Fluid Mechanics (AREA)
General Life Sciences & Earth Sciences (AREA)
Geochemistry & Mineralogy (AREA)
Earth Drilling (AREA)
Bulkheads Adapted To Foundation Construction (AREA)

NL4987D 1917-12-28 NL4987C (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE332712T		1917-12-28

Publications (1)

Publication Number	Publication Date
NL4987C true NL4987C (en)	1917-06-04

Family

ID=6205070

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
NL4987D NL4987C (en)	1917-12-28

Country Status (5)

Country	Link
US (1)	US1588154A (en)
DE (2)	DE332712C (en)
FR (1)	FR550358A (en)
GB (2)	GB148421A (en)
NL (1)	NL4987C (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3527295A (en) *	1968-11-12	1970-09-08	William O Gangl	Tool article and method of use
DE29701622U1 (en) *	1997-01-31	1998-06-04	Krupp Fördertechnik GmbH, 45143 Essen	Impact device

0
- NL NL4987D patent/NL4987C/xx active
- DE DENDAT303841D patent/DE303841C/de not_active Expired
1917
- 1917-12-28 DE DE1917332712D patent/DE332712C/en not_active Expired
1920
- 1920-07-10 GB GB20368/20A patent/GB148421A/en not_active Expired
- 1920-07-10 GB GB20844/20A patent/GB148984A/en not_active Expired
- 1920-07-10 FR FR550358D patent/FR550358A/en not_active Expired
1921
- 1921-08-31 US US497421A patent/US1588154A/en not_active Expired - Lifetime

Also Published As

Publication number	Publication date
FR550358A (en)	1923-03-05
DE332712C (en)	1921-02-09
GB148421A (en)	1921-11-10
DE303841C (en)	1919-07-12
GB148984A (en)	1921-11-10
US1588154A (en)	1926-06-08

Publication	Publication Date	Title
FR545306A (en)	1922-10-10
FR492140A (en)	1919-06-28
FR314989A (en)
FR494800A (en)
GB115630A (en)
FR492200A (en)	1919-07-01
FR497607A (en)
FR494445A (en)
FR477610A (en)
FR494443A (en)
FR494440A (en)
GB114817A (en)	1918-06-27
GB118265A (en)
GB131321A (en)
FR492058A (en)
FR495673A (en)	1919-10-15
FR492145A (en)	1919-06-28
FR492169A (en)	1919-07-01
FR492173A (en)	1919-07-01
FR492176A (en)	1919-07-01
FR492177A (en)	1919-07-01
FR492095A (en)
FR492682A (en)	1919-07-16
FR494730A (en)
FR487916A (en)