US2961214A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lined valve
Assignee: Flowserve Corp
•
Filing: 1958-12-04
•
Granted: 1960-11-22
•
Expires: 1978-12-04
Abstract
No abstract record available.
Inventors
- 👤 Jacob B Freed
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:12
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/02; F16K5/025; F16K27/00; F16K27/06; F16K27/062; F16K5/0257; F16K5/0278
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US193111A
Cited
US948075A
Cited
US2571925A
Cited
US2713987A
Cited
US2728550A
Cited
US2751930A
Cited
US2815253A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-22 | 1964-05-23 | 1964-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-22 | 1968-05-23 | 1968-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-22 | 1972-05-23 | 1972-11-22 | $7700.00 | Window Closed / Lapsed |