US2633872A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve actuating mechanism and assemblage
Assignee: Individual
•
Filing: 1947-04-21
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Granted: 1953-04-07
•
Expires: 1967-04-21
Abstract
No abstract record available.
Inventors
- 👤 Vincent D Hennessey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:33
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/10; F16K11/20; F16K11/202; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87056; Y10T137/8708; Y10T137/87096; Y10T137/87121; Y10T137/87129; Y10T137/87571; Y10T137/87676; Y10T137/87684
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US400177A
Cited
US927438A
Cited
US1734791A
Cited
US1960278A
Cited
US2149367A
Cited
GB539659A
Cited
US2238916A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-06 | 1956-10-06 | 1957-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-06 | 1960-10-06 | 1961-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-06 | 1964-10-06 | 1965-04-07 | $7700.00 | Window Closed / Lapsed |