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Patent US2492472A successfully refreshed from Google Patents.
US2492472A
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Speed responsive control system
Assignee: Bristol Aeroplane Co Ltd
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Filing: 1945-09-13
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Granted: 1949-12-27
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Expires: 1965-09-13
Abstract
No abstract record available.
Inventors
- 👤 Fortescue Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:31
CPC Classifications
H; H02; H02P; H02P23/00; H02P23/16; Y; Y10; Y10T; Y10T137/00; Y10T137/0971
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE380586C
Cited
US1604163A
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US1611223A
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US1833048A
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US2124725A
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US2151127A
Cited
US2275317A
Cited
US2431501A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-26 | 1953-06-27 | 1953-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-26 | 1957-06-27 | 1957-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-26 | 1961-06-27 | 1961-12-27 | $7700.00 | Window Closed / Lapsed |