US2870748A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary actuator
Assignee: North American Aviation Corp
•
Filing: 1953-06-30
•
Granted: 1959-01-27
•
Expires: 1973-06-30
Abstract
No abstract record available.
Inventors
- 👤 Carl A Hemphill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:17
CPC Classifications
B; B64; B64C; B64C13/00; B64C13/24; B64C13/38; B64C13/40; F; F15; F15B; F15B15/00; F15B15/08; F15B15/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2675679A
Cited
CH50262A
Cited
US1566075A
Cited
US2366382A
Cited
US2286516A
Cited
US2559817A
Cited
US2540903A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-26 | 1962-07-28 | 1963-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-26 | 1966-07-28 | 1967-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-26 | 1970-07-28 | 1971-01-27 | $7700.00 | Window Closed / Lapsed |