Patent US3213451A successfully refreshed from Google Patents.
US3213451A
Expired / Lapsed
US
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Airborne contour-sensing radar
Assignee: Individual
•
Filing: 1963-03-29
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Granted: 1965-10-19
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Expires: 1983-03-29
Abstract
No abstract record available.
Inventors
- 👤 Frederick C Alpers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:53
CPC Classifications
G; G01; G01S; G01S7/00; G01S7/02; G01S7/41; G01S7/411; G01S13/00; G01S13/02; G01S13/06; G01S13/42; G01S13/426; G01S13/88; G01S13/882
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
AN AIRBORNE CONTOUR SENSING RADAR SYSTEM FOR THE DETECTION AND IDENTIFICATION OF OBJECTS ON THE SURFACE OF THE GROUND COMPRISING: (A) ENERGY PULSE GENERATING MEANS, (B) ANTENNA MEANS COUPLED TO SAID ENERGY PULSE GENERATING MEANS FOR TRANSMITTING PULSE ENERGY IN A BEAM OF SMALL SOLID ANGLE AND RECEIVING ECHOES OF SAID PULSE ENERGY, (C) SCANNING CONTROL MEANS FOR SWEEPING SAID BEAM THROUGH A CONTROLLABLE ARC OF LESS THAN 180 DEGREES AND RETURNING SAID BEAM IN THE REVERSE DIRECTION INSTANTEOUSLY FOR CONTINUING A UNIDIRECTIONAL SCAN WITHOUT DELAY UPON COMPLETION OF THE LAST PRECEDING SCAN,
Claim 2
Dependent Claim
93 words
AN AIRBORNE CONTOUR SENSING RADAR SYSTEM FOR THE DETECTION AND IDENTIFICATION OF OBJECTS ON THE SURFACE OF THE GROUND COMPRISING: (A) ENERGY PULSE GENERATING MEANS, (B) ANTENNA MEANS COUPLED TO SAID ENERGY PULSE GENERATING MEANS FOR TRANSMITTING PULSE ENERGY IN A BEAM OF SMALL SOLID ANGLE AND RECEIVING ECHOES OF SAID PULSE ENERGY, (C) SCANNING CONTROL MEANS FOR SWEEPING SAID BEAM THROUGH A CONTROLLABLE ARC OF LESS THAN 180 DEGREES AND RETURNING SAID BEAM IN THE REVERSE DIRECTION INSTANTEOUSLY FOR CONTINUING A UNIDIRECTIONAL SCAN WITHOUT DELAY UPON COMPLETION OF THE LAST PRECEDING SCAN,
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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) | 1968-10-18 | 1969-04-19 | 1969-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-18 | 1973-04-19 | 1973-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-18 | 1977-04-19 | 1977-10-19 | $7700.00 | Window Closed / Lapsed |