US2636713A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gate valve
Assignee: Individual
•
Filing: 1948-03-01
•
Granted: 1953-04-28
•
Expires: 1968-03-01
Abstract
No abstract record available.
Inventors
- 👤 Leland S Hamer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:50
CPC Classifications
F; F16; F16K; F16K27/00; F16K27/04; F16K27/044; F16K27/047; Y; Y10; Y10T; Y10T137/00; Y10T137/598; Y10T137/6065; Y10T137/6072; Y10T137/6079
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US783953A
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DE599767C
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US197994A
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US257275A
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US295329A
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US660356A
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US1828478A
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US1675986A
Cited
US2059111A
Cited
US2117774A
Cited
US2203989A
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US2316933A
Cited
US2401123A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-27 | 1956-10-27 | 1957-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-27 | 1960-10-27 | 1961-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-27 | 1964-10-27 | 1965-04-28 | $7700.00 | Window Closed / Lapsed |