Patent US3287658A successfully refreshed from Google Patents.
US3287658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frequency standard
Assignee: Tracor Aerospace Austin Inc
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Filing: 1962-02-14
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Granted: 1966-11-22
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Expires: 1982-02-14
Abstract
No abstract record available.
Inventors
- 👤 Peter G Sulzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:06
CPC Classifications
H; H03; H03L; H03L1/00; H03L1/02; H03L1/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
A FREQUENCY STANDARD COMPRISING A TEMPERATURE STABILIZED OUTER OVEN, A TEMPERATURE STABILIZED INNER OVEN LOCATED IN SAID OUTER OVEN, A CRYSTAL CONTROLLED OSCILLATOR LOCATED IN SAID INNER OVEN, A HIGH INPUT IMPEDANCE AMPLIFIER FOR AMPLIFYING OUTPUT WAVES GENERATED BY SAID OSCILLATOR, SAID AMPLIFIER BEING LOCATED IN SAID OUTER OVEN AND INCLUDING NEGATIVE FEEDBACK MEANS FOR STABILIZING ITS GAIN, MEANS RESPONSIVE TO THE OUTPUT OF SAID AMPLIFIER FOR DERIVING AN AUTOMATIC VOLUME CONTROL SIGNAL INDICATIVE ONLY OF THE AMPLITUDE OF SAID WAVES AS DERICED FROM SAID AMPLIFIER, AND MEANS RESPONSIVE TO SAID AUTOMATIC VOLUME CONTROL SIGNAL TO STABILIZE THE AMPLITUDE OF THE OUTPUT WAVES GENERATED BY SAID OSCILLATOR.
Claim 2
Dependent Claim
107 words
A FREQUENCY STANDARD COMPRISING A TEMPERATURE STABILIZED OUTER OVEN, A TEMPERATURE STABILIZED INNER OVEN LOCATED IN SAID OUTER OVEN, A CRYSTAL CONTROLLED OSCILLATOR LOCATED IN SAID INNER OVEN, A HIGH INPUT IMPEDANCE AMPLIFIER FOR AMPLIFYING OUTPUT WAVES GENERATED BY SAID OSCILLATOR, SAID AMPLIFIER BEING LOCATED IN SAID OUTER OVEN AND INCLUDING NEGATIVE FEEDBACK MEANS FOR STABILIZING ITS GAIN, MEANS RESPONSIVE TO THE OUTPUT OF SAID AMPLIFIER FOR DERIVING AN AUTOMATIC VOLUME CONTROL SIGNAL INDICATIVE ONLY OF THE AMPLITUDE OF SAID WAVES AS DERICED FROM SAID AMPLIFIER, AND MEANS RESPONSIVE TO SAID AUTOMATIC VOLUME CONTROL SIGNAL TO STABILIZE THE AMPLITUDE OF THE OUTPUT WAVES GENERATED BY SAID OSCILLATOR.
References Cited (Backward Citations)
US1959156A
Cited
US2169307A
Cited
US2775699A
Cited
US3007023A
Cited
US3084294A
Cited
US3109082A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-21 | 1970-05-23 | 1970-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-21 | 1974-05-23 | 1974-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-21 | 1978-05-23 | 1978-11-22 | $7700.00 | Window Closed / Lapsed |