US2761518A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Propeller pitch changing mechanism
Assignee: Motors Liquidation Co
•
Filing: 1951-09-08
•
Granted: 1956-09-04
•
Expires: 1971-09-08
Abstract
No abstract record available.
Inventors
- 👤 Robert C Treseder
- 👤 James R Kessler
- 👤 Robert K Skinner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:28
CPC Classifications
B; B64; B64C; B64C11/00; B64C11/30; B64C11/44
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1465500A
Cited
US1877446A
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US2320195A
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US2363670A
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US2382847A
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US2410659A
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US2455315A
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US2517150A
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US2612958A
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US2590199A
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US2502041A
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US2632516A
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GB625176A
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GB626828A
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US2669312A
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US2592124A
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US2699304A
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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) | 1959-09-04 | 1960-03-05 | 1960-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-04 | 1964-03-05 | 1964-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-04 | 1968-03-05 | 1968-09-04 | $7700.00 | Window Closed / Lapsed |