Patent US2514830A successfully refreshed from Google Patents.
US3333263A
Expired / Lapsed
US
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Three-dimensional display for terrain avoidance radar
Assignee: North American Aviation Corp
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Filing: 1961-01-03
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Granted: 1967-07-25
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Expires: 1981-01-03
Abstract
No abstract record available.
Inventors
- 👤 Algimantas H Kazakevicius
- 👤 Forest J Dynan
- 👤 Jerome M Page
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:37
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/88; G01S13/93; G01S13/933; G01S13/935; G01S1/00; G01S1/02; G01S13/02; G01S13/06; G01S13/42; G01S13/44; G01S13/4472; G01S7/00; G01S7/02; G01S7/04; G01S7/06; G01S7/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
IN A RADAR SYSTEM, MEANS PROVIDING A SIGNAL REPRESENTING THE ANGLE SUBTENDED BY TERRAIN ABOVE AND BELOW A PREDETERMINED CLEARANCE SURFACE, MEANS FOR PEAK DETECTING SAID SIGNAL, AND MEANS RESPONSIVE TO THE OUTPUT OF SAID PEAK DETECTOR FOR PROVIDING A SILHOUETTE OUTLINE DISPLAY OF THE TERRAIN.
Claim 2
Dependent Claim
46 words
IN A RADAR SYSTEM, MEANS PROVIDING A SIGNAL REPRESENTING THE ANGLE SUBTENDED BY TERRAIN ABOVE AND BELOW A PREDETERMINED CLEARANCE SURFACE, MEANS FOR PEAK DETECTING SAID SIGNAL, AND MEANS RESPONSIVE TO THE OUTPUT OF SAID PEAK DETECTOR FOR PROVIDING A SILHOUETTE OUTLINE DISPLAY OF THE TERRAIN.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-24 | 1971-01-23 | 1971-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-24 | 1975-01-23 | 1975-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-24 | 1979-01-23 | 1979-07-25 | $7700.00 | Window Closed / Lapsed |