US2925993A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seat for gate valve
Assignee: ACF Industries Inc
•
Filing: 1956-12-27
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Granted: 1960-02-23
•
Expires: 1976-12-27
Abstract
No abstract record available.
Inventors
- 👤 Jesse S Downs
- 👤 Collier C Pryor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:18
CPC Classifications
F; F16; F16K; F16K3/00; F16K3/02; F16K3/0227; F16K27/00; F16K27/04; F16K27/044; F16K3/16; F16K3/18; F16K3/184; F16K3/186; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49405; Y10T29/49409
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-22 | 1963-08-24 | 1964-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-22 | 1967-08-24 | 1968-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-22 | 1971-08-24 | 1972-02-23 | $7700.00 | Window Closed / Lapsed |