US3386689A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aircraft autopilot with control wheel steering
Assignee: Unisys Corp
•
Filing: 1967-02-06
•
Granted: 1968-06-04
•
Expires: 1987-02-06
Abstract
No abstract record available.
Inventors
- 👤 Robert H Parker
- 👤 Bernard T Devlin
- 👤 Edwin H Purvis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:31
CPC Classifications
G; G05; G05D; G05D1/00; G05D1/0055; G05D1/0061
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3021097A
Cited
US3033496A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-04 | 1971-12-04 | 1972-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-04 | 1975-12-04 | 1976-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-04 | 1979-12-04 | 1980-06-04 | $7700.00 | Window Closed / Lapsed |