US3721499A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Navigating and landing device for aircraft
Assignee: Individual
•
Filing: 1966-06-30
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Granted: 1973-03-20
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Expires: 1986-06-30
Abstract
Abstract A DEVICE FOR NIGHT NAVIGATION OF AIRCRAFT HAS A TELEVISION CAMERA CARRIED BY THE AIRCRAFT THE AXIS OF WHICH IS STABILIZED WITH RESPECT TO THE GROUND. A VIDEO MONITOR IS PROVIDED WITH SCALES ON WHICH THE CAMERA SHOWS THE IMAGES OF TWO LIGHT BEAMS PROJECTED FROM THE AIRCRAFT. THE BEAMS ARE DIVERGENT AND CONVERGENT.
Inventors
- 👤 Jaureguy J Narbaits
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:53
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/02; G05; G05D; G05D1/00; G05D1/04; G05D1/06; G05D1/0607; G05D1/0653; G05D1/0676
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-19 | 1976-09-18 | 1977-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-19 | 1980-09-18 | 1981-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-19 | 1984-09-18 | 1985-03-20 | $7700.00 | Window Closed / Lapsed |