US2509104A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Propeller control
Assignee: Motors Liquidation Co
•
Filing: 1943-11-17
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Granted: 1950-05-23
•
Expires: 1963-11-17
Abstract
No abstract record available.
Inventors
- 👤 May James Russell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:53
CPC Classifications
B; B64; B64C; B64C11/00; B64C11/30; B64C11/38; B64C11/42; Y; Y10; Y10T; Y10T137/00; Y10T137/0971; Y10T137/108; Y10T137/1135
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR701179A
Cited
US1941372A
Cited
DE703319C
Cited
US2292805A
Cited
US2307102A
Cited
US2307101A
Cited
US2407791A
Cited
US2391699A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-05-22 | 1953-11-21 | 1954-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-22 | 1957-11-21 | 1958-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-22 | 1961-11-21 | 1962-05-23 | $7700.00 | Window Closed / Lapsed |