Patent US3257659A successfully refreshed from Google Patents.
US3257659A
Expired / Lapsed
US
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Counter-detection system
Assignee: RADATRON RES AND DEV CORP
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Filing: 1963-12-03
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Granted: 1966-06-21
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Expires: 1983-12-03
Abstract
No abstract record available.
Inventors
- 👤 Vernon H Siegel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:01
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/74; G01S13/75; G01S13/751; G01S13/753; G01S13/88; G01S13/91; G01S13/92; G01S7/00; G01S7/02; G01S7/021
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
A COUNTER DETECTION SYSTEM COMPRISING A MICROWAVE TRANSMITTER AND RECEIVER EACH INCLUDING AN ANTENNA, A CONTINUOUS WAVE DETECTOR INCLUDING A MICROWAVE ANTENNA, A MODULATOR DIODE AND A DETECTOR DIODE PHYSICALLY MOUNTED ON AND SUPPORTED BY SAID MICROWAVE ANTENNA, DISTRIBUTED CAPACITIVE MEANS COUPLING SAID DIODES TO OPPOSITE SIDES OF SAID MICROWAVE ANTENNA, OSCILLATOR MEANS COUPLED TO SAID MODULATOR DIODE FOR PERIODICALLY RENDERING SAID MODULATOR DIODE CONDUCTIVE, MEANS INCLUDING SAID DISTRIBUTED CAPACITIVE MEANS FOR DERIVING A DEMODULATED OUTPUT FROM SAID DETECTOR DIODE, INDICATING MEANS COUPLED TO SAID DETECTOR DIODE, MEANS FOR TRANSMITTING A FIRST SIGNAL FROM SAID TRANSMITTER TO BOTH SAID MICROWAVE RECDIVER AND SAID CONTINUOUS WAVE DETECTOR, SAID CONTINUOUS WAVE DETECTOR RADIATING A SECOND SIGNAL GENERATED IN SAID MODULATOR DIODE AND DIFFERING IN FREQUENCY FROM SAID FIRST SIGNAL BY AN AMOUNT EQUAL TO THE FREQUENCY OF SAID OSCILLATOR MEANS, AND MEANS IN SAID MICROWAVE RECEIVER FOR DETECTING SAID SECOND SIGNAL.
Claim 2
Dependent Claim
149 words
A COUNTER DETECTION SYSTEM COMPRISING A MICROWAVE TRANSMITTER AND RECEIVER EACH INCLUDING AN ANTENNA, A CONTINUOUS WAVE DETECTOR INCLUDING A MICROWAVE ANTENNA, A MODULATOR DIODE AND A DETECTOR DIODE PHYSICALLY MOUNTED ON AND SUPPORTED BY SAID MICROWAVE ANTENNA, DISTRIBUTED CAPACITIVE MEANS COUPLING SAID DIODES TO OPPOSITE SIDES OF SAID MICROWAVE ANTENNA, OSCILLATOR MEANS COUPLED TO SAID MODULATOR DIODE FOR PERIODICALLY RENDERING SAID MODULATOR DIODE CONDUCTIVE, MEANS INCLUDING SAID DISTRIBUTED CAPACITIVE MEANS FOR DERIVING A DEMODULATED OUTPUT FROM SAID DETECTOR DIODE, INDICATING MEANS COUPLED TO SAID DETECTOR DIODE, MEANS FOR TRANSMITTING A FIRST SIGNAL FROM SAID TRANSMITTER TO BOTH SAID MICROWAVE RECDIVER AND SAID CONTINUOUS WAVE DETECTOR, SAID CONTINUOUS WAVE DETECTOR RADIATING A SECOND SIGNAL GENERATED IN SAID MODULATOR DIODE AND DIFFERING IN FREQUENCY FROM SAID FIRST SIGNAL BY AN AMOUNT EQUAL TO THE FREQUENCY OF SAID OSCILLATOR MEANS, AND MEANS IN SAID MICROWAVE RECEIVER FOR DETECTING SAID SECOND SIGNAL.
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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) | 1969-06-20 | 1969-12-20 | 1970-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-20 | 1973-12-20 | 1974-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-20 | 1977-12-20 | 1978-06-21 | $7700.00 | Window Closed / Lapsed |