US2916254A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary valves
Assignee: Hale Fire Pump Co
•
Filing: 1954-12-13
•
Granted: 1959-12-08
•
Expires: 1974-12-13
Abstract
No abstract record available.
Inventors
- 👤 Evert J Wendell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:17
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/06; F16K5/0663; F16K5/0673; F16K5/0626; F16K5/0636
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1879481A
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US2109042A
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US2529412A
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US2628809A
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US2628060A
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US2578396A
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US2521659A
Cited
GB716610A
Cited
US2796230A
Cited
US2653791A
Cited
US2665879A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-07 | 1963-06-08 | 1963-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-07 | 1967-06-08 | 1967-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-07 | 1971-06-08 | 1971-12-08 | $7700.00 | Window Closed / Lapsed |