Patent US2593484A successfully refreshed from Google Patents.
US2593484A
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US
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Automatic aircraft propeller synchronizer
Assignee: Individual
•
Filing: 1945-11-19
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Granted: 1952-04-22
•
Expires: 1965-11-19
Abstract
No abstract record available.
Inventors
- 👤 La Verne R Philpott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:49
CPC Classifications
H; H02; H02P; H02P5/00; H02P5/46; H02P5/48; H02P5/485
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR671248A
Cited
US2076202A
Cited
US2261145A
Cited
US2160324A
Cited
GB517117A
Cited
US2251388A
Cited
US2271629A
Cited
US2314610A
Cited
US2322114A
Cited
US2399685A
Cited
US2431687A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-22 | 1955-10-22 | 1956-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-22 | 1959-10-22 | 1960-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-22 | 1963-10-22 | 1964-04-22 | $7700.00 | Window Closed / Lapsed |