NL22121C - - Google Patents
Info
- Publication number
- NL22121C NL22121C NL22121DA NL22121C NL 22121 C NL22121 C NL 22121C NL 22121D A NL22121D A NL 22121DA NL 22121 C NL22121 C NL 22121C
- 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
- E21B31/00—Fishing for or freeing objects in boreholes or wells
- E21B31/12—Grappling tools, e.g. tongs or grabs
- E21B31/20—Grappling tools, e.g. tongs or grabs gripping internally, e.g. fishing spears
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Marine Sciences & Fisheries (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 |
|---|---|---|---|
| NL24947T |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL22121C true NL22121C (de) | 1930-01-15 |
Family
ID=19752226
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL24947D NL24947C (de) | |||
| NL22121D NL22121C (de) |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL24947D NL24947C (de) |
Country Status (1)
| Country | Link |
|---|---|
| NL (2) | NL22121C (de) |
-
0
- NL NL24947D patent/NL24947C/xx active
- NL NL22121D patent/NL22121C/xx active
Also Published As
| Publication number | Publication date |
|---|---|
| NL24947C (de) | 1931-03-16 |