US3384759A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anticoincidence circuit
Assignee: AT&T Inc
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Filing: 1965-05-20
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Granted: 1968-05-21
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Expires: 1985-05-20
Abstract
No abstract record available.
Inventors
- 👤 Edward J Aspell
- 👤 John J Kokinda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 00:51
CPC Classifications
H; H03; H03K; H03K19/00; H03K19/20; H03K19/21; H03K19/212
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
182 words
AN ANTICOINCIDENCE CIRCUIT COMPRISING, A SOURCE OF DIRECT CURRENT POTENTIAL, A VOLTAGE DIVIDER CONNECTED ACROSS SAID SOURCE WHERE SAID VOLTAGE DIVIDER COMPRISES FIRST AND SECOND SERIALLY CONNECTED RESISTORS, A THIRD RESISTOR AND A FIRST DIODE CONNECTED IN SERIES ACROSS SAID FIRST RESISTOR WITH SAID FIRST DIODE HAVING ONE TERMINAL CONNECTED TO THE JUNCTION BETWEEN SAID FIRST AND SECOND RESISTORS AND POLED FOR EASY CURRENT FLOW, A FOURTH RESISTOR AND A SECOND DIODE CONNECTED IN SERIES ACROSS SAID FIRST RESISTOR WITH SAID SECOND DIODE HAVING ONE TERMINAL CONNECTED TO SAID JUNCTION AND POLED FOR EASY CURRENT FLOW, A FIFTH RESISTOR, A TRANSISTOR, MEANS CONNECTING PATH FIFTH RESISTOR AND THE COLLECTORTO-EMITTER PATH OF AID TRANSISTOR IN SERIES ACROSS SAID SECOND RESISTOR AND BIASING SAID TRANSISTOR SO THAT SAID TRANSISTOR IS NORMALLY CONDUCTING, FIRST AND SECOND INPUT TERMINALS, MEANS CONNECTING SAID FIRST AND SECOND INPUT TERMINALS TO SAID FIRST AND SECOND DIODE TERMINALS NOT CONNECTED TO SAID JUNCTION, RESPECTIVELY, MEANS CONNECTING SAID FIRST AND SECOND INPUT TERMINALS TO THE BASE OF SAID TRANSISTOR, AN OUTPUT TERMINAL, AND MEANS CONNECTING SAID OUTPUT TERMINAL TO SAID JUNCTION.
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) | 1971-05-21 | 1971-11-20 | 1972-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-21 | 1975-11-20 | 1976-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-21 | 1979-11-20 | 1980-05-21 | $7700.00 | Window Closed / Lapsed |