NL44075C - - Google Patents
Info
- Publication number
- NL44075C NL44075C NL44075DA NL44075C NL 44075 C NL44075 C NL 44075C NL 44075D A NL44075D A NL 44075DA NL 44075 C NL44075 C NL 44075C
- 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
- E21B10/00—Drill bits
- E21B10/08—Roller bits
- E21B10/083—Roller bits with longitudinal axis, e.g. wobbling or nutating roller bit
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
- Auxiliary Devices For Machine Tools (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3007136A GB473112A (en) | 1936-11-04 | 1936-11-04 | Improvements in and relating to underreamers and oversize hole drilling tools for drilling boreholes such as wells |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL44075C true NL44075C (xx) | 1938-04-15 |
Family
ID=10301801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL44075D NL44075C (xx) | 1936-11-04 |
Country Status (2)
| Country | Link |
|---|---|
| GB (1) | GB473112A (xx) |
| NL (1) | NL44075C (xx) |
-
0
- NL NL44075D patent/NL44075C/xx active
-
1936
- 1936-11-04 GB GB3007136A patent/GB473112A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB473112A (en) | 1937-10-06 |