US3206745A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Terrain clearance system
Assignee: Northrop Grumman Guidance and Electronics Co Inc
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Filing: 1962-04-10
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Granted: 1965-09-14
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Expires: 1982-04-10
Abstract
No abstract record available.
Inventors
- 👤 Donald E Waters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:00
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/88; G01S13/93; G01S13/933; G01S13/935
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
A TERRIAN CLEARANCE SYSTEM FOR USE WITH AN AIRBORNE RADAR SET WHICH CAN PRODUCE AN "A" SCOPE TYPE OF SIGNAL INDICATIVE OF THE RADAR SHADOW CONTAINED IN THE RADAR RETURN RECEIVED BY SAID RADAR SET COMPRISING SIGNAL CIRCUIT MEANS CONNECTING SAID SCOPE TO SAID RADER SET, INTEGRATING MEANS FOR SAID "A" SCOPE SIGNAL AND PROVIDING A FIRST SIGNAL INDICATIVE OF THE AMOUNT OF SAID RADAR SHADOWO, ABSOLUTE ALTIMETER MEANS FOR PROVIDING A SECOND SIGNAL INDICATIVE OF THE ABSOLUTE ALTITUDE OF SAID RADAR SET, AND MEANS FOR PROVIDING A THIRD SIGNAL WHEN SAID FIRST AND SECOND SIGNALS SIMULTANEOUSLY DIFFER BY AT LEAST PRESET AMOUNTS FROM PREDETERMINED REFERENCE SIGNALS.
Claim 2
Dependent Claim
107 words
A TERRIAN CLEARANCE SYSTEM FOR USE WITH AN AIRBORNE RADAR SET WHICH CAN PRODUCE AN "A" SCOPE TYPE OF SIGNAL INDICATIVE OF THE RADAR SHADOW CONTAINED IN THE RADAR RETURN RECEIVED BY SAID RADAR SET COMPRISING SIGNAL CIRCUIT MEANS CONNECTING SAID SCOPE TO SAID RADER SET, INTEGRATING MEANS FOR SAID "A" SCOPE SIGNAL AND PROVIDING A FIRST SIGNAL INDICATIVE OF THE AMOUNT OF SAID RADAR SHADOWO, ABSOLUTE ALTIMETER MEANS FOR PROVIDING A SECOND SIGNAL INDICATIVE OF THE ABSOLUTE ALTITUDE OF SAID RADAR SET, AND MEANS FOR PROVIDING A THIRD SIGNAL WHEN SAID FIRST AND SECOND SIGNALS SIMULTANEOUSLY DIFFER BY AT LEAST PRESET AMOUNTS FROM PREDETERMINED REFERENCE SIGNALS.
References Cited (Backward Citations)
US2965894A
Cited
US3086200A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-13 | 1969-03-15 | 1969-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-13 | 1973-03-15 | 1973-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-13 | 1977-03-15 | 1977-09-14 | $7700.00 | Window Closed / Lapsed |