US3243606A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bipolar current signal driver
Assignee: Unisys Corp
•
Filing: 1963-11-21
•
Granted: 1966-03-29
•
Expires: 1983-11-21
Abstract
No abstract record available.
Inventors
- 👤 Robert C Green
- 👤 Rodriguez Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:38
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/51; H03K17/56; H03K17/60; H03K17/66; H03K17/661; H03K17/662; H03K5/00; H03K5/01; H03K5/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
198 words
A BIPOLAR CURRENT SIGNAL DRIVER, COMPRISING: A PAIR OF INPUT TERMINALS; A PAIR OF OUTPUT TERMINALS; FIRST, SECOND AND THIRD PAIRS OF SIMILAR CONDUCTIVITY TYPE TRANSISTORS, EACH TRANSISTOR HAVING A BASE, AN EMITTER AND A COLLECTOR ELECTRODE; THE BASE ELECTRODE OF ONE TRANSISTOR OF THE FIRST PAIR COUPLED TO ONE OF THE INPUT TERMINALS AND THE BASE ELECTRODE OF THE OTHER TRANSISTOR OF SAID FIRST PAIR COUPLED TO THE OTHER INPUT TERMINAL; FIRST RESISTOR MEANS COUPLING THE BASE ELECTRODE OF ONE TRANSISTOR OF THE THIRD PAIR TO THE EMITTER ELECTRODE OF THE ONE TRANSISTOR OF SAID FIRST PAIR: SECOND RESISTOR MEANS COUPLING THE BASE ELECTRODE OF ONE TRANSISTOR OF THE SECOND PAIR TO THE EMITTER ELECTRODE OF THE ONE TRANSISTOR OF SAID FIRST PAIR; THIRD RESISTOR MEANS COUPLING THE BASE ELECTRODE OF THE OTHER TRANSISTOR OF THE THIRD PAIR TO THE EMITTER ELECTRODE OF THE OTHER TRANSISTOR OF SAID FIRST PAIR; FOURTH RESISTOR MEANS COUPLING THE BASE ELECTRODE OF THE OTHER TRANSISTOR OF THE SECOND PAIR TO THE EMITTER ELECTRODE OF THE OTHER TRANSISTOR OF SAID FIRST PAIR; MEANS FOR DIRECTLY INTERCOUPLING THE COLLECTOR ELECTRODES OF THE TRANSISTORS OF SAID THIRD PAIR FOR RECEIVING A FIRST REFERENCE VOLTAGE;
Claim 2
Dependent Claim
198 words
A BIPOLAR CURRENT SIGNAL DRIVER, COMPRISING: A PAIR OF INPUT TERMINALS; A PAIR OF OUTPUT TERMINALS; FIRST, SECOND AND THIRD PAIRS OF SIMILAR CONDUCTIVITY TYPE TRANSISTORS, EACH TRANSISTOR HAVING A BASE, AN EMITTER AND A COLLECTOR ELECTRODE; THE BASE ELECTRODE OF ONE TRANSISTOR OF THE FIRST PAIR COUPLED TO ONE OF THE INPUT TERMINALS AND THE BASE ELECTRODE OF THE OTHER TRANSISTOR OF SAID FIRST PAIR COUPLED TO THE OTHER INPUT TERMINAL; FIRST RESISTOR MEANS COUPLING THE BASE ELECTRODE OF ONE TRANSISTOR OF THE THIRD PAIR TO THE EMITTER ELECTRODE OF THE ONE TRANSISTOR OF SAID FIRST PAIR: SECOND RESISTOR MEANS COUPLING THE BASE ELECTRODE OF ONE TRANSISTOR OF THE SECOND PAIR TO THE EMITTER ELECTRODE OF THE ONE TRANSISTOR OF SAID FIRST PAIR; THIRD RESISTOR MEANS COUPLING THE BASE ELECTRODE OF THE OTHER TRANSISTOR OF THE THIRD PAIR TO THE EMITTER ELECTRODE OF THE OTHER TRANSISTOR OF SAID FIRST PAIR; FOURTH RESISTOR MEANS COUPLING THE BASE ELECTRODE OF THE OTHER TRANSISTOR OF THE SECOND PAIR TO THE EMITTER ELECTRODE OF THE OTHER TRANSISTOR OF SAID FIRST PAIR; MEANS FOR DIRECTLY INTERCOUPLING THE COLLECTOR ELECTRODES OF THE TRANSISTORS OF SAID THIRD PAIR FOR RECEIVING A FIRST REFERENCE VOLTAGE;
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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) | 1969-03-28 | 1969-09-27 | 1970-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-28 | 1973-09-27 | 1974-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-28 | 1977-09-27 | 1978-03-29 | $7700.00 | Window Closed / Lapsed |