US2426007A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable pitch propeller arrangement
Assignee: Fairey Aviation Co Ltd
•
Filing: 1942-11-14
•
Granted: 1947-08-19
•
Expires: 1962-11-14
Abstract
No abstract record available.
Inventors
- 👤 Forsyth Archibald Graham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:01
CPC Classifications
B; B64; B64C; B64C11/00; B64C11/30; B64C11/306
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB499514A
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GB483760A
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US2236841A
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US2280714A
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US2313795A
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GB517696A
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FR50162E
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US2246745A
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US2318929A
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US2333973A
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US2338483A
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US2310261A
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US2293912A
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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) | 1950-08-18 | 1951-02-17 | 1951-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-08-18 | 1955-02-17 | 1955-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-08-18 | 1959-02-17 | 1959-08-19 | $7700.00 | Window Closed / Lapsed |