Patent US2517680A successfully refreshed from Google Patents.
US2517680A
Expired / Lapsed
US
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Flying control for aircraft
Assignee: SAUNDERS ROE Ltd
•
Filing: 1947-11-29
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Granted: 1950-08-08
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Expires: 1967-11-29
Abstract
No abstract record available.
Inventors
- 👤 Knowler Henry
- 👤 Robertson Frank Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:07
CPC Classifications
B; B64; B64C; B64C13/00; Y; Y02; Y02T; Y02T50/00; Y02T50/40; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19535
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-07 | 1954-02-06 | 1954-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-07 | 1958-02-06 | 1958-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-07 | 1962-02-06 | 1962-08-08 | $7700.00 | Window Closed / Lapsed |