Patent US3246231A successfully refreshed from Google Patents.
US3246231A
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Frequency conversion system utilizing controlled frequency feedback
Assignee: AT&T Inc
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Filing: 1961-11-10
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Granted: 1966-04-12
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Expires: 1981-11-10
Abstract
No abstract record available.
Inventors
- 👤 Patrick W Clarke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:52
CPC Classifications
H; H02; H02M; H02M5/00; H02M5/02; H02M5/04; H02M5/22; H02M5/25; H02M5/27
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
135 words
A REGULATED SOLID-STATE FREQUENCY CONVERSION SYSTEM COMPRISING FIRST AND SECOND BISTABLE DEVICES HAVING CONDUCTIVE AND SUBSTANTIALLY NONCONDUCTIVE STATES AND INPUT, OUTPUT AND CONTROL ELECTRODES, A SOURCE OF INPUT FREQUENCY CONNECTED TO THE INPUT ELECTRODES OF EACH OF SAID FIRST AND SECOND BISTABLE DEVICES, A LOAD CONNECTED TO THE OUTPUT ELECTRODES OF EACH OF SAID FIRST AND SECOND BISTABLE DEVICES, A SOURCE OF REFERENCE FREQUENCY HAVING THE DESIRED LOAD FREQUENCY AND WAVEFORM OUTPUT, CONTROL MEANS CONNECTED TO SAID INPUT AND REFERENCE SOURCES AND THE CONTROL ELECTRODES OF EACH OF SAID BISTABLE DEVICES TO CONTROL THE STATES OF CONDUCTION OF SAID BISTABLE DEVICES, FEEDBACK MEANS RESPONSIVE TO LOAD FREQUENCY WAVEFORM AND VOLTAGE VARIATIONS CONNECTED TO SAID LOAD, SAID REFERENCE FREQUENCY SOURCE AND SAID CONTROL MEANS WHEREBY FEEDBACK CONTROLLED FREQUENCY AND WAVEFORM CONVERSION AND VOLTAGE REGULATION IS OBTAINED.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-11 | 1969-10-11 | 1970-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-11 | 1973-10-11 | 1974-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-11 | 1977-10-11 | 1978-04-12 | $7700.00 | Window Closed / Lapsed |