US3140443A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frequency scanning receiver with clutter rejection
Assignee: Raytheon Co
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Filing: 1961-05-26
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Granted: 1964-07-07
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Expires: 1981-05-26
Abstract
No abstract record available.
Inventors
- 👤 Floyd T Wimberly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:33
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/02; G01S13/50; G01S13/58; G01S13/585; G01S13/586
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
IN COMBINATION, MEANS TO SCAN A GIVEN FREQUENCY SPECTRUM, MEANS FOR MEASURING SUBSTANTIALLY NOISE-FREE SIGNALS OF AN UNDESIRED SIGNAL FREQUENCY BAND IN A PORTION OF SAID SPECTRUM TO PROVIDE A CONTROL SIGNAL PROPORTIONAL TO THE FREQUENCY OF SAID UNDESIRED SIGNALS, AND MEANS RESPONSIVE TO SAID CONTROL SIGNAL TO LIMIT THE SWEEP OF SAID FREQUENCY SCANNING MEANS.
Claim 2
Dependent Claim
56 words
IN COMBINATION, MEANS TO SCAN A GIVEN FREQUENCY SPECTRUM, MEANS FOR MEASURING SUBSTANTIALLY NOISE-FREE SIGNALS OF AN UNDESIRED SIGNAL FREQUENCY BAND IN A PORTION OF SAID SPECTRUM TO PROVIDE A CONTROL SIGNAL PROPORTIONAL TO THE FREQUENCY OF SAID UNDESIRED SIGNALS, AND MEANS RESPONSIVE TO SAID CONTROL SIGNAL TO LIMIT THE SWEEP OF SAID FREQUENCY SCANNING MEANS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-07 | 1968-01-06 | 1968-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-07 | 1972-01-06 | 1972-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-07 | 1976-01-06 | 1976-07-07 | $7700.00 | Window Closed / Lapsed |