Patent US3140447A successfully refreshed from Google Patents.
US3140447A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Input signal controlled regenerative frequency dividers
Assignee: Individual
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Filing: 1961-01-18
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Granted: 1964-07-07
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Expires: 1981-01-18
Abstract
No abstract record available.
Inventors
- 👤 John E Olbrych
- 👤 Kagan Sholly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:39
CPC Classifications
H; H03; H03B; H03B21/00; H03B21/01; H03B21/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
198 words
AN IMPROVED FREQUENCY DIVIDER FOR GENERATING SINUSOIDAL ELECTRICAL ENERGY OF FREQUENCY F IN RESPONSE TO ELECTRICAL ENERGY CONTAINING FREQUENCY NF WHERE N IS AN INTEGER AND WHICH DIVIDER IS NON OSCILLATORY IN THE ABSENCE OF AN INPUT SIGNAL NF WITHIN A PREDETERMINED RANGE OF AMPLITUDE AND THAT IS REGENERATIVE WHEN AN INPUT SIGNAL NF WITHIN SAID PREDETERMINED RANGE OF AMPLITUDE IS APPLIED THERETO COMPRISING MIXING MEANS FOR MIXING FREQUENCY NF WITH FREQUENCY MF, WHERE N-M=1, AND PRODUCING AN OUTPUT FREQUENCY F, FREQUENCY MULTIPLIER MEANS FOR CONVERTING FREQUENCY F TO FREQUENCY MF, MEANS FOR COUPLING ENERGY OF FREQUENCY MF FROM SAID MULTIPLIER TO SAID MIXER, MEANS FOR COUPLING ENERGY OF FREQUENCY F FROM SAID MIXER TO SAID MULTIPLIER AND TO AN OUTPUT TERMINAL OF SAID FREQUENCY DIVIDER, DIRECT CURRENT POWER SUPPLY MEANS FOR OFF-BIASING SAID MIXER AND MULTIPLIER IN ABSENCE OF INPUT SIGNAL NF OF SUFFICIENT AMPLITUDE AND FOR PERMITTING ON-BIAS OF SAID MIXER ONLY WHEN AN INPUT SIGNAL NF OF SUFFICIENT AMPLITUDE IS APPLIED THERETO, AND BIAS TRANSFER MEANS CONNECTED BETWEEN SAID MIXER AND SAID MULTIPLIER FOR ON-BIASING SAID MULTIPLIER A PREDETERMINED LENGTH OF TIME AFTER SAID MIXER IS ON-BIASED BY AN INPUT SIGNAL NF OF SUFFICIENT AMPLITUDE.
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) | 1967-07-07 | 1968-01-06 | 1968-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-07 | 1972-01-06 | 1972-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-07 | 1976-01-06 | 1976-07-07 | $7700.00 | Window Closed / Lapsed |