Patent US3560975A successfully refreshed from Google Patents.
US3560975A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aircraft antenna system for aerial navigation
Assignee: Centre National d'Études Spatiales
•
Filing: 1968-03-01
•
Granted: 1971-02-02
•
Expires: 1988-03-01
Abstract
Abstract AN ANTENNA ARRAY FOR USE IN AN AIRCRAFT, ADAPTED TO ALLOW NAVIGATION TO BE EFFECTED BY REFERENCE TO TWO FIXED POINTS IN SPACE WHICH MAY BE OUTSIDE THE EARTH''S ATMOSPHERE, COMPRISING TWO DUAL LATERAL ANTENNAS, ONE DUALANTENNA FOR EACH SIDE OF THE AIRCRAFT, EACH ANTENNA INCORPORATING A TRANSMISSION SECTION AND A RECEIVING SECTION, WHICH SECTIONS ARE FIXED RELATIVE TO THE AIRCRAFT, MEANS BEING PROVIDED WHEREBY THE RADIO BEAMS EMITTED (AND RECEIVED) BY SAID ANTENNAS ARE CAPABLE OF ORIENTATION BY VIRTUE OF ELECTRONIC SCANNING TECHNIQUES, TOWARDS THE RESPECTIVE FIXED POINTS OF REFERENCE.
Inventors
- 👤 Bertrand Claude Marcel Manuali
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:31
CPC Classifications
H; H01; H01Q; H01Q3/00; H01Q3/26; H01Q3/30; H01Q3/34; H01Q21/00; H01Q21/0006; H01Q21/0037; H01Q21/0043; H01Q21/005; H01Q21/0056; H01Q3/28; H01Q3/32; H01Q3/36; H01Q3/38
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |