US2731231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resilient seal valve
Assignee: Individual
•
Filing: 1951-04-10
•
Granted: 1956-01-17
•
Expires: 1971-04-10
Abstract
No abstract record available.
Inventors
- 👤 John C Garrott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:44
CPC Classifications
F; F16; F16K; F16K3/00; F16K3/02; F16K3/0263
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB447495A
Cited
US2194261A
Cited
US2194262A
Cited
US2238357A
Cited
US2194264A
Cited
US2401123A
Cited
US2510442A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-16 | 1959-07-18 | 1960-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-16 | 1963-07-18 | 1964-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-16 | 1967-07-18 | 1968-01-17 | $7700.00 | Window Closed / Lapsed |