US2974640A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure controlled actuator
Assignee: Fairchild Engine and Airplane Corp
•
Filing: 1957-11-21
•
Granted: 1961-03-14
•
Expires: 1977-11-21
Abstract
No abstract record available.
Inventors
- 👤 Lindbom Torsten
- 👤 Walter H Rucks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:05
CPC Classifications
F; F15; F15B; F15B9/00; F15B9/02; F15B9/06; Y; Y10; Y10T; Y10T137/00; Y10T137/2278; Y10T137/2409
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2264262A
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US2406181A
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US2411748A
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US2411747A
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US2575085A
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US2558506A
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US2653578A
Cited
US2728231A
Cited
US2755812A
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US2789543A
Cited
US2914077A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-03-13 | 1964-09-12 | 1965-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-13 | 1968-09-12 | 1969-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-13 | 1972-09-12 | 1973-03-14 | $7700.00 | Window Closed / Lapsed |