US2989073A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure and vacuum relief valve
Assignee: Bastian Blessing Co
•
Filing: 1956-05-04
•
Granted: 1961-06-20
•
Expires: 1976-05-04
Abstract
No abstract record available.
Inventors
- 👤 Harris A Goodwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:33
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/18; F16K17/19; F16K17/196; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7771; Y10T137/7779; Y10T137/7781; Y10T137/7783
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US657891A
Cited
US942112A
Cited
US1140565A
Cited
US1287119A
Cited
US1703570A
Cited
US2103725A
Cited
US2328007A
Cited
US2328010A
Cited
US2782800A
Cited
FR1091265A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-19 | 1964-12-19 | 1965-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-19 | 1968-12-19 | 1969-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-19 | 1972-12-19 | 1973-06-20 | $7700.00 | Window Closed / Lapsed |