Patent US2595642A successfully refreshed from Google Patents.
US2595642A
Expired / Lapsed
US
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Aircraft rotor blade pitch control linkage
Assignee: Boeing Helicopters Co
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Filing: 1946-11-29
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Granted: 1952-05-06
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Expires: 1966-11-29
Abstract
No abstract record available.
Inventors
- 👤 Daland Elliot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:09
CPC Classifications
B; B64; B64C; B64C27/00; B64C27/51
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB293932A
Cited
US1940108A
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FR726828A
Cited
US1905776A
Cited
US2192492A
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US2318260A
Cited
US2397154A
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US2429646A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-05-06 | 1955-11-05 | 1956-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-06 | 1959-11-05 | 1960-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-06 | 1963-11-05 | 1964-05-06 | $7700.00 | Window Closed / Lapsed |