US2694459A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable pitch propeller control latch mechanism
Assignee: HARTZELL INDUSTRIES
•
Filing: 1949-12-27
•
Granted: 1954-11-16
•
Expires: 1969-12-27
Abstract
No abstract record available.
Inventors
- 👤 Bicrmann David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:55
CPC Classifications
B; B64; B64C; B64C11/00; B64C11/30; B64C11/32; B64C11/325
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1834350A
Cited
US1903628A
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US1913733A
Cited
FR845466A
Cited
US2259693A
Cited
GB558310A
Cited
US2391778A
Cited
FR931065A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-15 | 1958-05-17 | 1958-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-15 | 1962-05-17 | 1962-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-15 | 1966-05-17 | 1966-11-16 | $7700.00 | Window Closed / Lapsed |