US2851253A
Drill bit
Abstract
This record has no abstract on file.
Term
Term ended
Expired 9 September 1975, 51 years ago.
- Priority and filed
- Granted
- Expired
- Today
2 sheets
Sheet 1 Sheet 2
Every citation, both ways
| Document | Relation | Office | Cited during |
|---|---|---|---|
| US8145465B2 | Cited by | United States of America | Applicant |
| US3239431A | Cited by | United States of America | Search report |
| US2006224368A1 | Cited by | United States of America | Pre-grant |
| US8296115B2 | Cited by | United States of America | Applicant |
| US2004104053A1 | Cited by | United States of America | Pre-grant |
| US2004167762A1 | Cited by | United States of America | Pre-grant |
| US2004186700A1 | Cited by | United States of America | Pre-grant |
| US2007125579A1 | Cited by | United States of America | Pre-grant |
| US2005133273A1 | Cited by | United States of America | Pre-grant |
| US6029759A | Cited by | United States of America | Search report |
| US7860696B2 | Cited by | United States of America | Applicant |
| US3104726A | Cited by | United States of America | Search report |
| US6986395B2 | Cited by | United States of America | Applicant |
| US3269469A | Cited by | United States of America | Search report |
| US2004158445A1 | Cited by | United States of America | Pre-grant |
| US7497281B2 | Cited by | United States of America | Applicant |
| US2004230413A1 | Cited by | United States of America | Pre-grant |
| US2004045742A1 | Cited by | United States of America | Pre-grant |
| US2004182609A1 | Cited by | United States of America | Pre-grant |
| US2005194191A1 | Cited by | United States of America | Pre-grant |
| US2004236553A1 | Cited by | United States of America | Pre-grant |
| US8352221B2 | Cited by | United States of America | Applicant |
| US5839526A | Cited by | United States of America | Search report |
| US5868213A | Cited by | United States of America | Search report |
| US2004105741A1 | Cited by | United States of America | Pre-grant |
| US2011077928A1 | Cited by | United States of America | Pre-grant |
| US7778777B2 | Cited by | United States of America | Applicant |
| US8606552B2 | Cited by | United States of America | Applicant |
| US2004186869A1 | Cited by | United States of America | Pre-grant |
| US7360612B2 | Cited by | United States of America | Applicant |
| US7827014B2 | Cited by | United States of America | Applicant |
| US7434632B2 | Cited by | United States of America | Applicant |
| US2003217788A1 | Cited by | United States of America | Pre-grant |
| US2004140130A1 | Cited by | United States of America | Pre-grant |
| US7334652B2 | Cited by | United States of America | Applicant |
| US2004182608A1 | Cited by | United States of America | Pre-grant |
| US2006118333A1 | Cited by | United States of America | Pre-grant |
| US2001037902A1 | Cited by | United States of America | Pre-grant |
| US2005018891A1 | Cited by | United States of America | Pre-grant |
| US2006032674A1 | Cited by | United States of America | Pre-grant |
| US7729895B2 | Cited by | United States of America | Applicant |
| US7860693B2 | Cited by | United States of America | Applicant |
| US9493990B2 | Cited by | United States of America | Applicant |
| US5915486A | Cited by | United States of America | Search report |
| US1143275A | Cites | United States of America | Search report |
| US1905165A | Cites | United States of America | Search report |
| US2184066A | Cites | United States of America | Search report |
| US2248340A | Cites | United States of America | Search report |
| US2527838A | Cites | United States of America | Search report |
| US2660405A | Cites | United States of America | Search report |
2 priority claims, no other members on record
Priority claims2
| Document | Office | Kind | Date |
|---|---|---|---|
| 42588954 | United States of America | A | |
| US19540425889 | – | – | – |
Numbers
- Publication, DOCDB
- 2851253
- Publication, EPODOC
- US2851253
- Application
- 425889
- Application, DOCDB
- 42588954
- Application, EPODOC
- US19540425889
Titles
- English
- Drill bit
Classification
- CPC, 1
- E21B10/16
- IPC, 1
- E21B10 16