US2731095A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aircraft rotor and control therefor
Assignee: Individual
•
Filing: 1952-01-03
•
Granted: 1956-01-17
•
Expires: 1972-01-03
Abstract
No abstract record available.
Inventors
- 👤 Theodore M Leka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:57
CPC Classifications
B; B64; B64C; B64C27/00; B64C27/54; B64C27/58; B64C27/59; B64C27/605; B64C27/72; B64C2027/7205; B64C2027/7261; B64C2027/7294; Y; Y02; Y02T; Y02T50/00; Y02T50/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2064223A
Cited
US2296250A
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US2443393A
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US2512461A
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US2476516A
Cited
US2506210A
Cited
US2581773A
Cited
US2606622A
Cited
GB652817A
Cited
US2631679A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-16 | 1959-07-18 | 1960-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-16 | 1963-07-18 | 1964-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-16 | 1967-07-18 | 1968-01-17 | $7700.00 | Window Closed / Lapsed |