Patent US2914294A successfully refreshed from Google Patents.
US2914294A
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Gate valve
Assignee: Chiksan Co
•
Filing: 1957-05-03
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Granted: 1959-11-24
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Expires: 1977-05-03
Abstract
No abstract record available.
Inventors
- 👤 Guy M Beatty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:56
CPC Classifications
F; F16; F16K; F16K3/00; F16K3/02; F16K3/16; F16K3/20; F16K3/207; F16K15/00; F16K15/14; F16K15/141; F16K15/142; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7879; Y10T137/7888
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US333492A
Cited
US2732170A
Cited
US1054150A
Cited
US1476344A
Cited
FR868864A
Cited
US2786642A
Cited
FR1089995A
Cited
FR1114153A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-23 | 1963-05-25 | 1963-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-23 | 1967-05-25 | 1967-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-23 | 1971-05-25 | 1971-11-24 | $7700.00 | Window Closed / Lapsed |