US2780427A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Artificial feel device
Assignee: North American Aviation Corp
•
Filing: 1952-07-10
•
Granted: 1957-02-05
•
Expires: 1972-07-10
Abstract
No abstract record available.
Inventors
- 👤 George R Keller
- 👤 Robert W Jenuy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:30
CPC Classifications
B; B64; B64C; B64C13/00; B64C13/24; B64C13/26; B64C13/28; B64C13/345; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20006
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1018400A
Cited
US1273059A
Cited
US1600542A
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US1857750A
Cited
US2106289A
Cited
US2365951A
Cited
US2602662A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-02-05 | 1960-08-06 | 1961-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-05 | 1964-08-06 | 1965-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-05 | 1968-08-06 | 1969-02-05 | $7700.00 | Window Closed / Lapsed |