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US3147388A Expired / Lapsed US ⏱️ 0.0 years remaining

Complementing flip-flops with bi-directional steering gate and inverter transistor

Assignee: Unisys Corp
•
Filing: 1962-01-31
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Granted: 1964-09-01
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Expires: 1982-01-31
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Abstract

No abstract record available.

Inventors

  • 👤 Clark Edward Gary

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 20:44
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/26; H03K3/28; H03K3/281; H03K3/286; H03K3/288

Claims Analysis

Total Claims: 1
Claim 1
Independent Claim 180 words
A BI-STABLE CIRCUIT ADAPTED TO BE SHIFTED FROM EITHER OF TWO STABLE OPERATING STATES TO THE OTHER SUCH STATE IN RESPONSE TO EACH OF SUCCESSIVE TRIGGERING PULSES OF THE SAME POLARITY, SAID CIRCUIT COMPRISING A BI-STABLE DEVICE HAVING AN INPUT AND AN OUTPUT, A BI-DIRECTIONAL TRANSISTOR HAVING TWO OUTER ZONES OF ONE CONDUCTIVITY TYPE AND AN INNER ZONE OF THE OTHER CONDUCTIVITY TYPE, DIRECT CURRENT MEANS COUPLING ONE OF SAID OUTER ZONES TO THE INPUT OF SAID BI-STABLE DEVICE, AND DELAY CIRCUIT MEANS CONNECTING THE OUTPUT OF SAID BI-STABLE DEVICE TO THE OTHER OUTER ZONE OF SAID BI-DIRECTIONAL TRANSISTOR WHEREBY SAID BI-DIRECTIONAL TRANSISTOR IS BIASED FOR CONDUCTION IN A DIRECTION CORRESPONDING TO THE STATE OF SAID BI-STABLE DEVICE, SAID DELAY CIRCUIT TENDING TO RESIST A RAPID CHANGE IN THE AMOUNT OF BIAS ON SAID BI-DIRECTIONAL TRANSISTOR UPON SHIFTING THE STATE OF SAID BI-STABLE DEVICE, AND PULSE GENERATING MEANS FOR SUPPLYING PULSES OF ONE POLARITY TO THE INNER ZONE OF SAID BI-DIRECTIONAL TRANSISTOR TO SHIFT THE STATE OF THE FLIPFLOP IN ACCORDANCE WITH THE DIRECTION OF CONDUCTION OF SAID BI-DIRECTIONAL TRANSISTOR.

References Cited (Backward Citations)

US3028506A Cited
US2965768A Cited
US2909678A Cited
US2885574A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1967-09-01 1968-03-02 1968-09-01 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1971-09-01 1972-03-02 1972-09-01 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1975-09-01 1976-03-02 1976-09-01 $7700.00 Window Closed / Lapsed

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