US2987277A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aircraft control system
Assignee: North American Aviation Corp
•
Filing: 1958-10-14
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Granted: 1961-06-06
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Expires: 1978-10-14
Abstract
No abstract record available.
Inventors
- 👤 John D Richardson
- 👤 David S Stephenson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:16
CPC Classifications
B; B64; B64C; B64C9/00; B64C9/32; B64C9/326; B64C13/00; B64C21/00; B64C21/02; B64C9/323; B64C2230/00; B64C2230/06; B64C2230/20; Y; Y02; Y02T; Y02T50/00; Y02T50/10
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) | 1964-06-05 | 1964-12-05 | 1965-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-05 | 1968-12-05 | 1969-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-05 | 1972-12-05 | 1973-06-06 | $7700.00 | Window Closed / Lapsed |