BE412429A - - Google Patents
Info
- Publication number
- BE412429A BE412429A BE412429DA BE412429A BE 412429 A BE412429 A BE 412429A BE 412429D A BE412429D A BE 412429DA BE 412429 A BE412429 A BE 412429A
- Authority
- BE
- Belgium
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
- E21B6/00—Drives for drilling with combined rotary and percussive action
- E21B6/06—Drives for drilling with combined rotary and percussive action the rotation being intermittent, e.g. obtained by ratchet device
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)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE412429T |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE412429A true BE412429A (xx) | 1935-12-31 |
Family
ID=3869244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE412429D BE412429A (xx) | 1935-11-22 |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE412429A (xx) |
| FR (1) | FR798069A (xx) |
-
1935
- 1935-11-21 FR FR798069D patent/FR798069A/fr not_active Expired
- 1935-11-22 BE BE412429D patent/BE412429A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR798069A (fr) | 1936-05-08 |