US3308380A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phase-stable receiver
Assignee: Northrop Grumman Space and Mission Systems Corp
•
Filing: 1962-11-13
•
Granted: 1967-03-07
•
Expires: 1982-11-13
Abstract
No abstract record available.
Inventors
- 👤 Ross E Graves
- 👤 Don M Jacob
- 👤 Jacob M Sacks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:08
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/74; G01S13/82; G01S13/84
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
IN COMBINATION, MEANS HAVING PHASE VARYING STAGES FOR RECEIVING AN INPUT FREQUENCY VARYING CARRIER SIGNAL, MEANS FOR ADDING SAID CARRIER SIGNAL WITH AN INJECTED REFERENCE SIGNAL BEFORE ALL OF SAID PHASE VARYING STAGES, SAID INJECTED REFERENCE SIGNAL DIFFERING FROM SAID CARRIER SIGNAL BY AN AUDIO OFFSET FREQUENCY, MEANS FOR AMPLIFYING SAID CARRIER SIGNAL AND SAID INJECTED REFERENCE SIGNAL, MEANS FOR DETECTING SAID AUDIO OFFSET FREQUENCY FROM THE COMPOSITE SIGNAL COMPRISING SAID CARRIER SIGNAL AND SAID INJECTED REFERENCE SIGNAL,
Claim 2
Dependent Claim
78 words
IN COMBINATION, MEANS HAVING PHASE VARYING STAGES FOR RECEIVING AN INPUT FREQUENCY VARYING CARRIER SIGNAL, MEANS FOR ADDING SAID CARRIER SIGNAL WITH AN INJECTED REFERENCE SIGNAL BEFORE ALL OF SAID PHASE VARYING STAGES, SAID INJECTED REFERENCE SIGNAL DIFFERING FROM SAID CARRIER SIGNAL BY AN AUDIO OFFSET FREQUENCY, MEANS FOR AMPLIFYING SAID CARRIER SIGNAL AND SAID INJECTED REFERENCE SIGNAL, MEANS FOR DETECTING SAID AUDIO OFFSET FREQUENCY FROM THE COMPOSITE SIGNAL COMPRISING SAID CARRIER SIGNAL AND SAID INJECTED REFERENCE SIGNAL,
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |