US2703148A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Propeller pitch lock
Assignee: RTX Corp
•
Filing: 1952-03-06
•
Granted: 1955-03-01
•
Expires: 1972-03-06
Abstract
No abstract record available.
Inventors
- 👤 David R Pearl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:20
CPC Classifications
B; B64; B64C; B64C11/00; B64C11/30; B64C11/38; B64C11/385
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2174717A
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US2282297A
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US2280713A
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US2343416A
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US2320195A
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US2392364A
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US2477868A
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US2635702A
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US2653671A
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US2592124A
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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) | 1958-02-28 | 1958-08-30 | 1959-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-02-28 | 1962-08-30 | 1963-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-02-28 | 1966-08-30 | 1967-03-01 | $7700.00 | Window Closed / Lapsed |