NL4987C - - Google Patents
Info
- Publication number
- NL4987C NL4987C NL4987DA NL4987C NL 4987 C NL4987 C NL 4987C NL 4987D A NL4987D A NL 4987DA NL 4987 C NL4987 C NL 4987C
- Authority
- NL
- Netherlands
Links
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)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE332712T | 1917-12-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL4987C true NL4987C (xx) | 1917-06-04 |
Family
ID=6205070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL4987D NL4987C (xx) | 1917-12-28 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US1588154A (xx) |
| DE (2) | DE332712C (xx) |
| FR (1) | FR550358A (xx) |
| GB (2) | GB148984A (xx) |
| NL (1) | NL4987C (xx) |
Families Citing this family (2)
| 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 (de) * | 1997-01-31 | 1998-06-04 | Krupp Fördertechnik GmbH, 45143 Essen | Prallwerk |
-
0
- DE DENDAT303841D patent/DE303841C/de not_active Expired
- NL NL4987D patent/NL4987C/xx active
-
1917
- 1917-12-28 DE DE1917332712D patent/DE332712C/de not_active Expired
-
1920
- 1920-07-10 GB GB20844/20A patent/GB148984A/en not_active Expired
- 1920-07-10 FR FR550358D patent/FR550358A/fr not_active Expired
- 1920-07-10 GB GB20368/20A patent/GB148421A/en not_active Expired
-
1921
- 1921-08-31 US US497421A patent/US1588154A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| GB148984A (en) | 1921-11-10 |
| DE303841C (xx) | 1919-07-12 |
| US1588154A (en) | 1926-06-08 |
| DE332712C (de) | 1921-02-09 |
| FR550358A (fr) | 1923-03-05 |
| GB148421A (en) | 1921-11-10 |