US2657755A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable pitch propeller
Assignee: Curtiss Wright Corp
•
Filing: 1947-08-28
•
Granted: 1953-11-03
•
Expires: 1967-08-28
Abstract
No abstract record available.
Inventors
- 👤 Maurice E Cushman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:23
CPC Classifications
B; B64; B64C; B64C11/00; B64C11/30; B64C11/303
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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FR878544A
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US2509104A
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US2425261A
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US2465090A
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US2539339A
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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) | 1956-11-02 | 1957-05-04 | 1957-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-02 | 1961-05-04 | 1961-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-02 | 1965-05-04 | 1965-11-03 | $7700.00 | Window Closed / Lapsed |