Patent US5989969A successfully refreshed from Google Patents.
Patent US3081433A successfully refreshed from Google Patents.
US3081433A
Expired / Lapsed
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Two-stage frequency detecting device employing a radiation sensitive input means
Assignee: Unisys Corp
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Filing: 1960-12-07
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Granted: 1963-03-12
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Expires: 1980-12-07
Abstract
No abstract record available.
Inventors
- 👤 Bosch Carl
- 👤 Fredricks Irwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:20
CPC Classifications
H; H03; H03D; H03D3/00; G; G01; G01T; G01T7/00; G01T7/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
A TWO-STAGE FREQUENCY DETECTING SYSTEM COMPRISING A FREQUENCY MIXING AND DEMODULATNIG COMPONENT, A FREQUENCY MEASURING OSCILLATOR CONNECTED AS ONE INPUT TO SAID COMPONENT, A REFERENCE OSCILLATOR CONNECTED AS A SECOND INPUT TO SAID COMPONENT, SAID FREQUENCY MEASURING OSCILLATOR BEING SET TO GENERATE A NORMAL FREQUENCY DIFFERING FROM THE FREQUENCY OF SAID REFERENCE OSCILLATOR WHEREBY A DIFFERENCE FREQUENCY IS NORMALLY PRODUCED BY THE COMPONENT, A RADIATION SENSOR DISPOSED IN FREQUENCY CONTROL OF SAID MEASURING OSCILLATOR, A SECOND MIXING AND DEMODULATING COMPONENT, SAID FIRST-MENTIONED MIXING AND DEMODULATING COMPONENT BEING CONNECTED AS ONE INPUT TO THE SECOND COMPONENT, A HARMONIC OSCILLATOR CONNECTED TO INTRODUCE ITS OUTPUT AS A SECOND INPUT TO SAID SECOND COMPONENT, SAID HARMONIC OSCILLATOR BEING SET TO GENERATE A HARMONIC FREQUENCY OF THE SAME VALUE AS A HARMONIC OF THE NORMAL FREQUENCY OUTPUT OF SAID FIRSTMENTIONED COMPONENT AND AN INDICATING DEVICE DISPOSED IN THE OUTPUT OF SAID SECOND COMPONENT.
Claim 2
Dependent Claim
149 words
A TWO-STAGE FREQUENCY DETECTING SYSTEM COMPRISING A FREQUENCY MIXING AND DEMODULATNIG COMPONENT, A FREQUENCY MEASURING OSCILLATOR CONNECTED AS ONE INPUT TO SAID COMPONENT, A REFERENCE OSCILLATOR CONNECTED AS A SECOND INPUT TO SAID COMPONENT, SAID FREQUENCY MEASURING OSCILLATOR BEING SET TO GENERATE A NORMAL FREQUENCY DIFFERING FROM THE FREQUENCY OF SAID REFERENCE OSCILLATOR WHEREBY A DIFFERENCE FREQUENCY IS NORMALLY PRODUCED BY THE COMPONENT, A RADIATION SENSOR DISPOSED IN FREQUENCY CONTROL OF SAID MEASURING OSCILLATOR, A SECOND MIXING AND DEMODULATING COMPONENT, SAID FIRST-MENTIONED MIXING AND DEMODULATING COMPONENT BEING CONNECTED AS ONE INPUT TO THE SECOND COMPONENT, A HARMONIC OSCILLATOR CONNECTED TO INTRODUCE ITS OUTPUT AS A SECOND INPUT TO SAID SECOND COMPONENT, SAID HARMONIC OSCILLATOR BEING SET TO GENERATE A HARMONIC FREQUENCY OF THE SAME VALUE AS A HARMONIC OF THE NORMAL FREQUENCY OUTPUT OF SAID FIRSTMENTIONED COMPONENT AND AN INDICATING DEVICE DISPOSED IN THE OUTPUT OF SAID SECOND COMPONENT.
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) | 1966-03-11 | 1966-09-10 | 1967-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-11 | 1970-09-10 | 1971-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-11 | 1974-09-10 | 1975-03-12 | $7700.00 | Window Closed / Lapsed |