Patent US2780372A successfully refreshed from Google Patents.
Patent US3174095A successfully refreshed from Google Patents.
US3174095A
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Bilateral constant voltage source
Assignee: AT&T Inc
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Filing: 1960-11-18
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Granted: 1965-03-16
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Expires: 1980-11-18
Abstract
No abstract record available.
Inventors
- 👤 John T Cocker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:27
CPC Classifications
G; G05; G05F; G05F3/00; G05F3/02; G05F3/08; G05F3/10; G05F3/16; G05F3/20; G05F3/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A BILATERAL CONSTANT VOLTAGE SOURCE WHICH COMPRISES, IN COMBINATION, A PAIR OF TRANSISTORS OF OPPOSITE CONDUCTIVITY TYPE EACH HAVING AN EMITTER ELECTRODE, A COLLECTOR ELECTRODE, AND A BASE ELECTRODE, AN OUTPUT CONNECTION JOINING THE EMITTER ELECTRODES OF BOTH OF SAID TRANSISTORS, A FIRST RESISTOR CONNECTED BETWEEN THE BASE AND COLLECTOR ELECTRODES OF ONE OF SAID TRANSISTORS, A SECOND RESISTOR CONNECTED BETWEEN THE BASE AND COLLECTOR ELECTRODES OF THE OTHER OF SAID TRANSISTORS, A SOURCE OF DIRECT VOLTAGE CONNECTED BETWEEN THE COLLECTOR ELECTRODES OF SAID TRANSISTOR AND POLED IN THE DIRECTION OF POSITIVE EMITTER CURRENT FLOW IN BOTH OF SAID TRANSISTORS, AND A THIRD RESISTOR CONNECTED BETWEEN THE BASE ELECTRODES OF
Claim 2
Dependent Claim
110 words
A BILATERAL CONSTANT VOLTAGE SOURCE WHICH COMPRISES, IN COMBINATION, A PAIR OF TRANSISTORS OF OPPOSITE CONDUCTIVITY TYPE EACH HAVING AN EMITTER ELECTRODE, A COLLECTOR ELECTRODE, AND A BASE ELECTRODE, AN OUTPUT CONNECTION JOINING THE EMITTER ELECTRODES OF BOTH OF SAID TRANSISTORS, A FIRST RESISTOR CONNECTED BETWEEN THE BASE AND COLLECTOR ELECTRODES OF ONE OF SAID TRANSISTORS, A SECOND RESISTOR CONNECTED BETWEEN THE BASE AND COLLECTOR ELECTRODES OF THE OTHER OF SAID TRANSISTORS, A SOURCE OF DIRECT VOLTAGE CONNECTED BETWEEN THE COLLECTOR ELECTRODES OF SAID TRANSISTOR AND POLED IN THE DIRECTION OF POSITIVE EMITTER CURRENT FLOW IN BOTH OF SAID TRANSISTORS, AND A THIRD RESISTOR CONNECTED BETWEEN THE BASE ELECTRODES OF
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) | 1968-03-15 | 1968-09-14 | 1969-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-15 | 1972-09-14 | 1973-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-15 | 1976-09-14 | 1977-03-16 | $7700.00 | Window Closed / Lapsed |