US2981279A
Vacuum release valve
Abstract
This record has no abstract on file.
Term
Term ended
Expired 25 April 1978, 48.4 years ago.
- Priority and filed
- Granted
- Expired
- Today
Every citation, both ways
| Document | Relation | Office | Cited during |
|---|---|---|---|
| US6591794B2 | Cited by | United States of America | Applicant |
| US3504697A | Cited by | United States of America | Search report |
| US4220123A | Cited by | United States of America | Search report |
| US6708958B1 | Cited by | United States of America | Applicant |
| DE1231077B | Cited by | Germany | Search report |
| US2005034689A1 | Cited by | United States of America | Pre-grant |
| US4146594A | Cited by | United States of America | Search report |
| US6328288B1 | Cited by | United States of America | Search report |
| US2006087046A1 | Cited by | United States of America | Pre-grant |
| US6957633B2 | Cited by | United States of America | Applicant |
| US7377496B2 | Cited by | United States of America | Applicant |
| US1156872A | Cites | United States of America | Search report |
| US1260663A | Cites | United States of America | Search report |
| US1443675A | Cites | United States of America | Search report |
| AT62045B | Cites | Austria | Search report |
2 priority claims, no other members on record
Priority claims2
| Document | Office | Kind | Date |
|---|---|---|---|
| 68514357 | United States of America | A | |
| US19570685143 | – | – | – |
Numbers
- Publication, DOCDB
- 2981279
- Publication, EPODOC
- US2981279
- Application
- 685143
- Application, DOCDB
- 68514357
- Application, EPODOC
- US19570685143
Titles
- English
- Vacuum release valve
Classification
- CPC, 6
- F02D9/00
- F02D2700/0235
- Y10S261/01
- Y10S261/19
- Y10T137/7668
- Y10T137/7749
- IPC, 1
- F02D9 00