US3202930A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for frequency synthesis
Assignee: GE Healthcare UK Ltd
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Filing: 1963-12-10
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Granted: 1965-08-24
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Expires: 1983-12-10
Abstract
No abstract record available.
Inventors
- 👤 Muraszko Jan Tadeusz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:38
CPC Classifications
H; H03; H03B; H03B21/00; H03B21/01; H03B21/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
171 words
AN ELECTRICAL OSCILLATION GENERATOR INCLUDING A PLURALITY OF IDENTICAL STAGES EACH CONSISTING OF A VARIABLEFREQUENCY OSCILLATOR, A MIXER DEVICE AND A FREQUENCY DISCRIMINATOR DEVICE; A SOURCE FOR A SERIES OF STANDARD FREQUENCIES ANY ONE OF WHICH CAN BE SELECTED FOR FEEDING TO THE MIXER DEVICE OF ANY STAGE; THE STAGES BEING ARRANGED IN A PREDETERMINED SEQUENCE WHEREBY A FIRST INPUT TO THE DISCRIMINATOR DEVICE OF EACH STAGE EXCEPT THE FIRST STAGE IS OBTAINED THROUGH ONE OF A SERIES OF IDENTICAL FREQUENCY DIVIDERS FROM THE VARIABLE-FREQUENCY OSCILLATOR OF THE NEXT PRECEDING STAGE IN THE SEQUENCE, A SECOND INPUT TO THE DISCRIMINATOR CONSISTING OF THE DIFFERENCE FREQUENCY RESULTING FROM THE COMPARISON IN THE MIXER DEVICE OF THE STAGE OF THE SELECTED ONE OF THE SAID STANDARD FREQUENCIES WITH THE FREQUENCY OF THE VARIABLEFREQUENCY OSCILLATOR OF THE STAGE, WHICH IS ARRANGED TO BE CONTROLLED IN ACCORDANCE WITH AN OUTPUT OF THE DISCRIMINATOR DEVICE IN SUCH A WAY AS TO REDUCE TO ZERO THE DIFFERENCE IN FREQUENCY BETWEEN THE SAID TWO INPUTS TO THE DISCRIMINATOR.
Claim 2
Dependent Claim
171 words
AN ELECTRICAL OSCILLATION GENERATOR INCLUDING A PLURALITY OF IDENTICAL STAGES EACH CONSISTING OF A VARIABLEFREQUENCY OSCILLATOR, A MIXER DEVICE AND A FREQUENCY DISCRIMINATOR DEVICE; A SOURCE FOR A SERIES OF STANDARD FREQUENCIES ANY ONE OF WHICH CAN BE SELECTED FOR FEEDING TO THE MIXER DEVICE OF ANY STAGE; THE STAGES BEING ARRANGED IN A PREDETERMINED SEQUENCE WHEREBY A FIRST INPUT TO THE DISCRIMINATOR DEVICE OF EACH STAGE EXCEPT THE FIRST STAGE IS OBTAINED THROUGH ONE OF A SERIES OF IDENTICAL FREQUENCY DIVIDERS FROM THE VARIABLE-FREQUENCY OSCILLATOR OF THE NEXT PRECEDING STAGE IN THE SEQUENCE, A SECOND INPUT TO THE DISCRIMINATOR CONSISTING OF THE DIFFERENCE FREQUENCY RESULTING FROM THE COMPARISON IN THE MIXER DEVICE OF THE STAGE OF THE SELECTED ONE OF THE SAID STANDARD FREQUENCIES WITH THE FREQUENCY OF THE VARIABLEFREQUENCY OSCILLATOR OF THE STAGE, WHICH IS ARRANGED TO BE CONTROLLED IN ACCORDANCE WITH AN OUTPUT OF THE DISCRIMINATOR DEVICE IN SUCH A WAY AS TO REDUCE TO ZERO THE DIFFERENCE IN FREQUENCY BETWEEN THE SAID TWO INPUTS TO THE DISCRIMINATOR.
References Cited (Backward Citations)
US2786140A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-23 | 1969-02-22 | 1969-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-23 | 1973-02-22 | 1973-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-23 | 1977-02-22 | 1977-08-24 | $7700.00 | Window Closed / Lapsed |