US2616655A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gate valve
Assignee: PAUL A DEWHIRST
•
Filing: 1945-05-21
•
Granted: 1952-11-04
•
Expires: 1965-05-21
Abstract
No abstract record available.
Inventors
- 👤 Leland S Hamer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:06
CPC Classifications
F; F16; F16K; F16K3/00; F16K3/30; F16K3/314; 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)
US871085A
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US1293874A
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CH104157A
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US1642242A
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US1800251A
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US1751122A
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US1866292A
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US2030458A
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US1946319A
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US1999921A
Cited
US2292622A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-04 | 1956-05-05 | 1956-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-04 | 1960-05-05 | 1960-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-04 | 1964-05-05 | 1964-11-04 | $7700.00 | Window Closed / Lapsed |