US3545313A
Combined grapple and back-up tong
Abstract
This record has no abstract on file.
Term
Term ended
Expired 8 December 1987, 38.8 years ago.
- Priority and filed
- Granted
- Expired
- Today
3 sheets
Sheet 1 Sheet 2 Sheet 3
Every citation, both ways
| Document | Relation | Office | Cited during |
|---|---|---|---|
| US5060542A | Cited by | United States of America | Search report |
| US5099725A | Cited by | United States of America | Search report |
| US4515045A | Cited by | United States of America | Search report |
| FR2531479A1 | Cited by | France | Search report |
| FR2610363A1 | Cited by | France | Search report |
| DE3138870C1 | Cited by | Germany | Search report |
| EP0194956A3 | Cited by | European Patent Office (EPO) | Search report |
| US4591007A | Cited by | United States of America | Search report |
| WO8800274A2 | Cited by | World Intellectual Property Organization (WIPO) | International search |
| US4604724A | Cited by | United States of America | Search report |
| WO8800274A3 | Cited by | World Intellectual Property Organization (WIPO) | International search |
| US4846271A | Cited by | United States of America | Search report |
| US4650235A | Cited by | United States of America | Search report |
| EP0194956A2 | Cited by | European Patent Office (EPO) | Search report |
| US4686873A | Cited by | United States of America | Search report |
| US5671961A | Cited by | United States of America | Search report |
| US5904075A | Cited by | United States of America | Search report |
| US1478020A | Cites | United States of America | Search report |
| US2544639A | Cites | United States of America | Search report |
| US3380323A | Cites | United States of America | Search report |
| US3392609A | Cites | United States of America | Search report |
4 priority claims, no other members on record
Priority claims4
| Document | Office | Kind | Date |
|---|---|---|---|
| 87250669 | United States of America | A | |
| 87250669 | United States of America | A | |
| 872506 | – | – | – |
| US19690872506 | – | – | – |
Numbers
- Publication, DOCDB
- 3545313
- Publication, EPODOC
- US3545313
- Application
- 872506
- Application, DOCDB
- 3545313D
- Application, EPODOC
- USD3545313
Titles
- English
- COMBINED GRAPPLE AND BACK-UP TONG
Classification
- CPC, 1
- E21B19/16
- IPC, 1
- E21B19 16