US2525694A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control means for turbo-prop units
Assignee: Armstrong Siddeley Motors Ltd
•
Filing: 1946-12-05
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Granted: 1950-10-10
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Expires: 1966-12-05
Abstract
No abstract record available.
Inventors
- 👤 Lindsey William Henry
- 👤 Slatter Brian Hudson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:45
CPC Classifications
B; B64; B64C; B64C11/00; B64C11/30; B64C11/303
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB495444A
Cited
US2322303A
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US2339090A
Cited
US2320195A
Cited
US2374276A
Cited
US2391323A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-09 | 1954-04-10 | 1954-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-09 | 1958-04-10 | 1958-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-09 | 1962-04-10 | 1962-10-10 | $7700.00 | Window Closed / Lapsed |