US2432320A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Torque responsive variable pitch propeller
Assignee: Individual
•
Filing: 1944-03-13
•
Granted: 1947-12-09
•
Expires: 1964-03-13
Abstract
No abstract record available.
Inventors
- 👤 Daniel G Lilley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:21
CPC Classifications
B; B64; B64C; B64C11/00; B64C11/30; B64C11/32; B64C11/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2207042A
Cited
US2217364A
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US2244139A
Cited
GB495444A
Cited
US2322303A
Cited
US2346979A
Cited
US2314610A
Cited
US2303998A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-12-08 | 1951-06-09 | 1951-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-12-08 | 1955-06-09 | 1955-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-12-08 | 1959-06-09 | 1959-12-09 | $7700.00 | Window Closed / Lapsed |