US2513660A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Propeller pitch control means
Assignee: RTX Corp
•
Filing: 1946-10-22
•
Granted: 1950-07-04
•
Expires: 1966-10-22
Abstract
No abstract record available.
Inventors
- 👤 Martin Eric
- 👤 Thomas B Rhines
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:23
CPC Classifications
B; B64; B64C; B64C11/00; B64C11/30; B64C11/303; Y; Y10; Y10S; Y10S60/00; Y10S60/904
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2204639A
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US2163663A
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GB517696A
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GB537079A
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US2310261A
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US2422966A
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US2413439A
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GB560522A
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US2391323A
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US2424559A
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US2468635A
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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) | 1953-07-03 | 1954-01-02 | 1954-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-03 | 1958-01-02 | 1958-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-03 | 1962-01-02 | 1962-07-04 | $7700.00 | Window Closed / Lapsed |