US3234484A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frequency calibrator for crystal oscillators
Assignee: Motorola Solutions Inc
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Filing: 1964-02-17
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Granted: 1966-02-08
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Expires: 1984-02-17
Abstract
No abstract record available.
Inventors
- 👤 Cooper Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:36
CPC Classifications
G; G01; G01R; G01R23/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
172 words
A SYSTEM FOR CALIBRATING THE FREQUENCY OF A CRYSTAL OSCILLATOR OUTPUT SIGNAL WHICH MAY HAVE ANY ONE OF A SERIES OF DISCRETE FREQUENCIES, THE FREQUENCIES IN THE SERIES BEING SEPARATED BY A FIXED DIFFERENCE FREQUENCY, THE SYSTEM INCLUDING IN COMBINATION, FIRST OSCILLATOR MEANS FOR GENERATING AN OUTPUT SIGNAL HAVING A FREQUENCY IN THE SERIES, SECOND OSCILLATOR MEANS FOR GENERATING AN OUTPUT SIGNAL HAVING A FREQUENCY SUBSTANTIALLY EQUAL TO THE FIXED DIFFERENCE FREQUENCY, SPECTRUM GENERATOR MEANS COUPLED TO SAID FIRST AND SECOND OSCILLATOR MEANS AND RESPONSIVE TO SAID OUTPUT SIGNALS THEREFROM TO DEVELOP A SIGNAL SPECTRUM INCLUDING THE SERIES OF DISCRETE FREQUENCIES, MIXER MEANS COUPLED TO SAID SPECTRUM GENERATOR MEANS AND ADAPTED TO RECEIVE THE OUTPUT SIGNAL FROM THE CRYSTAL OSCILLATOR, SAID MIXER MEANS BEING RESPONSIVE TO THE CRYSTAL OSCILLATOR OUTPUT SIGNAL AND SAID SIGNAL SPECTRUM TO DEVELOP A SIGNAL INCLUDING A SECOND SERIES OF DIFFERENCE FREQUENCY SIGNALS, AND OUTPUT MEANS COUPLED TO SAID MIXER MEANS FOR INDICATING THE FREQUENCY OF THE LOWEST FREQUENCY ONE OF SAID SECOND SERIES OF DIFFERENCE FREQUENCY SIGNALS.
Claim 2
Independent Claim
172 words
A SYSTEM FOR CALIBRATING THE FREQUENCY OF A CRYSTAL OSCILLATOR OUTPUT SIGNAL WHICH MAY HAVE ANY ONE OF A SERIES OF DISCRETE FREQUENCIES, THE FREQUENCIES IN THE SERIES BEING SEPARATED BY A FIXED DIFFERENCE FREQUENCY, THE SYSTEM INCLUDING IN COMBINATION, FIRST OSCILLATOR MEANS FOR GENERATING AN OUTPUT SIGNAL HAVING A FREQUENCY IN THE SERIES, SECOND OSCILLATOR MEANS FOR GENERATING AN OUTPUT SIGNAL HAVING A FREQUENCY SUBSTANTIALLY EQUAL TO THE FIXED DIFFERENCE FREQUENCY, SPECTRUM GENERATOR MEANS COUPLED TO SAID FIRST AND SECOND OSCILLATOR MEANS AND RESPONSIVE TO SAID OUTPUT SIGNALS THEREFROM TO DEVELOP A SIGNAL SPECTRUM INCLUDING THE SERIES OF DISCRETE FREQUENCIES, MIXER MEANS COUPLED TO SAID SPECTRUM GENERATOR MEANS AND ADAPTED TO RECEIVE THE OUTPUT SIGNAL FROM THE CRYSTAL OSCILLATOR, SAID MIXER MEANS BEING RESPONSIVE TO THE CRYSTAL OSCILLATOR OUTPUT SIGNAL AND SAID SIGNAL SPECTRUM TO DEVELOP A SIGNAL INCLUDING A SECOND SERIES OF DIFFERENCE FREQUENCY SIGNALS, AND OUTPUT MEANS COUPLED TO SAID MIXER MEANS FOR INDICATING THE FREQUENCY OF THE LOWEST FREQUENCY ONE OF SAID SECOND SERIES OF DIFFERENCE FREQUENCY SIGNALS.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-07 | 1969-08-09 | 1970-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-07 | 1973-08-09 | 1974-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-07 | 1977-08-09 | 1978-02-08 | $7700.00 | Window Closed / Lapsed |