US2136015A
Oil well tool
Abstract
This record has no abstract on file.
Term
Term ended
Expired 8 November 1955, 70.9 years ago.
- Priority and filed
- Granted
- Expired
- Today
Every citation, both ways
| Document | Relation | Office | Cited during |
|---|---|---|---|
| US2912053A | Cited by | United States of America | Search report |
| US2593520A | Cited by | United States of America | Search report |
| US2735498A | Cited by | United States of America | Search report |
| US3012623A | Cited by | United States of America | Search report |
| US4602684A | Cited by | United States of America | Search report |
| US2630178A | Cited by | United States of America | Search report |
| US2458278A | Cited by | United States of America | Search report |
| US2762436A | Cited by | United States of America | Search report |
| US3244234A | Cited by | United States of America | Search report |
Numbers
- Application
- 37966
Titles
- English
- Oil well tool
Classification
- CPC, 1
- E21B33/14
- IPC, 2
- E21B33 14
- E21B49 08