US2630815A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Speed-and acceleration-responsive valve
Assignee: Harland Engineering Co Ltd
•
Filing: 1948-05-03
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Granted: 1953-03-10
•
Expires: 1968-05-03
Abstract
No abstract record available.
Inventors
- 👤 Worthing Nicolas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:22
CPC Classifications
G; G05; G05D; G05D13/00; F; F15; F15B; F15B5/00; F15B5/003; G05D13/08; Y; Y10; Y10T; Y10T137/00; Y10T137/0971; Y10T137/0989
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2514674A
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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) | 1956-03-09 | 1956-09-08 | 1957-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-09 | 1960-09-08 | 1961-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-09 | 1964-09-08 | 1965-03-10 | $7700.00 | Window Closed / Lapsed |