US2424749A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Propeller pitch control
Assignee: Motors Liquidation Co
•
Filing: 1942-10-12
•
Granted: 1947-07-29
•
Expires: 1962-10-12
Abstract
No abstract record available.
Inventors
- 👤 John F Haines
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:53
CPC Classifications
B; B64; B64C; B64C11/00; B64C11/30; B64C11/44; Y; Y10; Y10S; Y10S60/00; Y10S60/904; Y10T; Y10T137/00; Y10T137/0971; Y10T137/108; Y10T137/1135; Y10T137/2496; Y10T137/2559; Y10T137/2574; Y10T137/2605; Y10T137/2617
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1712791A
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FR707126A
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DE703319C
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US2257126A
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GB480747A
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US2239566A
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US2214817A
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US2296288A
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US2233014A
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US2210295A
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US2307102A
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US2324701A
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US2280937A
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US2320195A
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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) | 1950-07-28 | 1951-01-27 | 1951-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-07-28 | 1955-01-27 | 1955-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-07-28 | 1959-01-27 | 1959-07-29 | $7700.00 | Window Closed / Lapsed |