Patent US2940527A successfully refreshed from Google Patents.
US2940527A
Expired / Lapsed
US
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Propeller pitch lock disabling and feather lock mechanism
Assignee: RTX Corp
•
Filing: 1957-10-25
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Granted: 1960-06-14
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Expires: 1977-10-25
Abstract
No abstract record available.
Inventors
- 👤 Harold L Van Alstyne
- 👤 Marshall B Thornton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:43
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)
US2703148A
Cited
US2791283A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-14 | 1963-12-14 | 1964-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-14 | 1967-12-14 | 1968-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-14 | 1971-12-14 | 1972-06-14 | $7700.00 | Window Closed / Lapsed |