Patent US3171039A successfully refreshed from Google Patents.
US3171039A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flip-flop circuit
Assignee: Unisys Corp
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Filing: 1960-12-23
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Granted: 1965-02-23
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Expires: 1980-12-23
Abstract
No abstract record available.
Inventors
- 👤 Lorenz Ray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:58
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/26; H03K3/28; H03K3/281; H03K3/286; H03K3/288
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
A BISTABLE MULTIVIBRATOR CIRCUIT INCLUDING FIRST AND SECOND INPUT CIRCUIT MEANS, FIRST AND SECOND OUTPUT TERMINALS, A VOLTAGE SOURCE, AND A SEMICONDUCTOR MEANS HAVING TWO OPERATING STATES INDICATED BY RELATIVELY HIGH AND LOW VOLTAGES ON SAID FIRST AND SECOND OUTPUT TERMINALS AND RESPECTIVELY INITIATED AND ATTAINED BY AN INPUT PULSE SIGNAL ON SAID FIRST AND SECOND INPUT CIRCUIT MEANS AND HAVING AT LEAST A FIRST AND SECOND ACTIVE ELEMENT, EACH OF SAID ACTIVE ELEMENTS HAVING AT LEAST THREE ELECTRODES, ONE ELECTRODE OF SAID FIRST ACTIVE ELEMENT BEING COUPLED DIRECTLY TO A SIMILAR ELECTRODE OF SAID SECOND ACTIVE ELEMENT, AND A CONSTANT CURRENT SOURCE COMPRISING A SERIALLY ASSOCIATED INDUCTOR AND RESISTOR DIRECTLY COUPLED TO SAID TWO DIRECTLY COUPLED ELECTRODES COUPLING THEM DIRECTLY TO SAID VOLTAGE SOURCE.
Claim 2
Dependent Claim
125 words
A BISTABLE MULTIVIBRATOR CIRCUIT INCLUDING FIRST AND SECOND INPUT CIRCUIT MEANS, FIRST AND SECOND OUTPUT TERMINALS, A VOLTAGE SOURCE, AND A SEMICONDUCTOR MEANS HAVING TWO OPERATING STATES INDICATED BY RELATIVELY HIGH AND LOW VOLTAGES ON SAID FIRST AND SECOND OUTPUT TERMINALS AND RESPECTIVELY INITIATED AND ATTAINED BY AN INPUT PULSE SIGNAL ON SAID FIRST AND SECOND INPUT CIRCUIT MEANS AND HAVING AT LEAST A FIRST AND SECOND ACTIVE ELEMENT, EACH OF SAID ACTIVE ELEMENTS HAVING AT LEAST THREE ELECTRODES, ONE ELECTRODE OF SAID FIRST ACTIVE ELEMENT BEING COUPLED DIRECTLY TO A SIMILAR ELECTRODE OF SAID SECOND ACTIVE ELEMENT, AND A CONSTANT CURRENT SOURCE COMPRISING A SERIALLY ASSOCIATED INDUCTOR AND RESISTOR DIRECTLY COUPLED TO SAID TWO DIRECTLY COUPLED ELECTRODES COUPLING THEM DIRECTLY TO SAID VOLTAGE SOURCE.
References Cited (Backward Citations)
US2269417A
Cited
US2793303A
Cited
US3037128A
Cited
US3066231A
Cited
US3034070A
Cited
US3046413A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-02-23 | 1968-08-24 | 1969-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-23 | 1972-08-24 | 1973-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-23 | 1976-08-24 | 1977-02-23 | $7700.00 | Window Closed / Lapsed |