Patent US3106672A successfully refreshed from Google Patents.
US3106672A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Output voltage control for power conversion apparatus
Assignee: AT&T Inc
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Filing: 1961-09-29
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Granted: 1963-10-08
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Expires: 1981-09-29
Abstract
No abstract record available.
Inventors
- 👤 John K Mills
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:33
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/42; H02M7/44; H02M7/48; H02M7/53; H02M7/537; H02M7/5383; H02M7/53832
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
101 words
IN COMBINATION, A TWO-TERMINAL SOURCE OF A DIRECTCURRENT POTENTIAL, A PAIR OF CONTROLLABLE SWITCHES EACH HAVING A CONTROL ELECTRODE AND A TRANSCONDUCTIVE PATH, CIRCUIT MEANS FOR CONNECTING THE TRANSCONDUCTIVE PATHS OF SAID SWITCHES IN SERIES ACROSS SAID SOURCE, MEANS CONNECTED TO THE CONTROL ELECTRODES OF SAID SWITCHES FOR TURN ING SAID SWITCHES ON AND OFF IN PHASE OPPOSITION, AN AUTOTRANSFORMER HAVING FIRST AND SECOND FIXED CONNECTIONS AND A MOVABLE TAP, A BLOCKING CAPACITOR CONNECTED BETWEEN SAID FIRST FIXED CONNEDTION AND THE JUNCTION OF SAID TRANSCONDUCTIVE PATHS, CIRCUIT MEANS FOR CONNECTING SAID SECOND FIXED CONNECTION TO ONE TERMINAL OF SAID SOURCE, A
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) | 1966-10-07 | 1967-04-08 | 1967-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-07 | 1971-04-08 | 1971-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-07 | 1975-04-08 | 1975-10-08 | $7700.00 | Window Closed / Lapsed |