US2514477A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable pitch propeller
Assignee: Curtiss Wright Corp
•
Filing: 1945-06-11
•
Granted: 1950-07-11
•
Expires: 1965-06-11
Abstract
No abstract record available.
Inventors
- 👤 Maurice E Cushman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:54
CPC Classifications
B; B64; B64C; B64C11/00; B64C11/02; B64C11/04; B64C11/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2032682A
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FR568951A
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US1921942A
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GB336479A
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US1920674A
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US1973573A
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FR768458A
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US2020239A
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US2233364A
Cited
GB486614A
Cited
US2205835A
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US2282077A
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US2396630A
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US2425938A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-07-10 | 1954-01-09 | 1954-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-10 | 1958-01-09 | 1958-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-10 | 1962-01-09 | 1962-07-11 | $7700.00 | Window Closed / Lapsed |