Patent US2979289A successfully refreshed from Google Patents.
US2979289A
Expired / Lapsed
US
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Automatic pilot for aircraft
Assignee: Unisys Corp
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Filing: 1955-03-31
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Granted: 1961-04-11
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Expires: 1975-03-31
Abstract
No abstract record available.
Inventors
- 👤 Malcolm J Abzug
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:28
CPC Classifications
G; G05; G05D; G05D1/00; G05D1/12
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) | 1964-04-10 | 1964-10-10 | 1965-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-10 | 1968-10-10 | 1969-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-10 | 1972-10-10 | 1973-04-11 | $7700.00 | Window Closed / Lapsed |