US2437256A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Auxiliary control mechanism for automatic pilot
Assignee: Individual
•
Filing: 1942-11-20
•
Granted: 1948-03-09
•
Expires: 1962-11-20
Abstract
No abstract record available.
Inventors
- 👤 Pliny G Holt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:02
CPC Classifications
B; B64; B64C; B64C13/00; B64C13/24; B64C13/26; B64C13/28
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
GB260260A
Cited
US1880671A
Cited
US1896805A
Cited
US1919191A
Cited
US1958259A
Cited
US1992970A
Cited
US2191250A
Cited
US2091306A
Cited
US2143140A
Cited
US2201174A
Cited
US2283754A
Cited
US2346857A
Cited
US2327171A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-03-09 | 1951-09-08 | 1952-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-03-09 | 1955-09-08 | 1956-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-03-09 | 1959-09-08 | 1960-03-09 | $7700.00 | Window Closed / Lapsed |