Patent JPS5327347A successfully refreshed from Google Patents.
US3243815A
Expired / Lapsed
US
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Radar testing apparatus
Assignee: North American Aviation Corp
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Filing: 1964-03-02
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Granted: 1966-03-29
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Expires: 1984-03-02
Abstract
No abstract record available.
Inventors
- 👤 Forest J Dynan
- 👤 Brice E Thornton
- 👤 Richard G Whituah
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:42
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/02; G01S13/06; G01S13/42; G01S13/44; G01S7/00; G01S7/02; G01S7/40; G01S7/4004; G01S7/4021
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
IN A SUM-AND-DIFFERENCE TYPE MONOPULSE RECEIVER HAVING ADJUSTABLE-GAIN, SUM CHANNEL AND DIFFERENCE CHANNEL AMPLIFIERS AND PROVIDING AN OUTPUT SIGNAL INDICATIVE OF THE TARGET ANGLE OF A DETECTED TARGET, RECEIVER TESTING MEANS COMPRISING SIGNAL INJECTION MEANS ADAPTED FOR SEVERALLY INJECTING TEST SIGNALS INTO SAID RECEIVER AMPLIFIERS; MEANS FOR ADJUSTING THE AMPLITUDE OF ONE OF SAID SIGNALS-TO-BE-INJECTED IN A SELECTED RELATION RELATIVE TO THAT OF THE OTHER OF SAID SIGNALS; AND MEANS RESPONSIVE TO SAID SECOND MENTIONED MEANS AND ADAPTED TO BE RESPONSIVE TO SAID RECEIVER OUTPUT SIGNAL FOR INDICATING THE RESPONSE OF SAID RECEIVER TO SAID FIRST AND SECOND MENTIONED MEANS.
Claim 2
Dependent Claim
100 words
IN A SUM-AND-DIFFERENCE TYPE MONOPULSE RECEIVER HAVING ADJUSTABLE-GAIN, SUM CHANNEL AND DIFFERENCE CHANNEL AMPLIFIERS AND PROVIDING AN OUTPUT SIGNAL INDICATIVE OF THE TARGET ANGLE OF A DETECTED TARGET, RECEIVER TESTING MEANS COMPRISING SIGNAL INJECTION MEANS ADAPTED FOR SEVERALLY INJECTING TEST SIGNALS INTO SAID RECEIVER AMPLIFIERS; MEANS FOR ADJUSTING THE AMPLITUDE OF ONE OF SAID SIGNALS-TO-BE-INJECTED IN A SELECTED RELATION RELATIVE TO THAT OF THE OTHER OF SAID SIGNALS; AND MEANS RESPONSIVE TO SAID SECOND MENTIONED MEANS AND ADAPTED TO BE RESPONSIVE TO SAID RECEIVER OUTPUT SIGNAL FOR INDICATING THE RESPONSE OF SAID RECEIVER TO SAID FIRST AND SECOND MENTIONED MEANS.
References Cited (Backward Citations)
US2881423A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-28 | 1969-09-27 | 1970-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-28 | 1973-09-27 | 1974-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-28 | 1977-09-27 | 1978-03-29 | $7700.00 | Window Closed / Lapsed |