US2963034A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aneroid valve for maintaining a minimum pressure
Assignee: FIREWEL DEV Co
•
Filing: 1957-07-01
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Granted: 1960-12-06
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Expires: 1977-07-01
Abstract
No abstract record available.
Inventors
- 👤 Richard D Cummins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:58
CPC Classifications
A; A62; A62B; A62B9/00; A62B9/02; B; B64; B64D; B64D10/00; G; G05; G05D; G05D16/00; G05D16/04; G05D16/06; G05D16/0616; G05D16/0619; G05D16/063; G05D16/0675; G05D16/0683; Y; Y10; Y10T; Y10T137/00; Y10T137/1842; Y10T137/1939; Y10T137/2012
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR637255A
Cited
US2452670A
Cited
US2437462A
Cited
US2630129A
Cited
US2755799A
Cited
US2867227A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-06 | 1964-06-06 | 1964-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-06 | 1968-06-06 | 1968-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-06 | 1972-06-06 | 1972-12-06 | $7700.00 | Window Closed / Lapsed |