US3244903A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Logic circuit
Assignee: Unisys Corp
•
Filing: 1962-02-21
•
Granted: 1966-04-05
•
Expires: 1982-02-21
Abstract
No abstract record available.
Inventors
- 👤 Sear Brian Elliott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:34
CPC Classifications
H; H03; H03K; H03K19/00; H03K19/02; H03K19/08; H03K19/10; H03K3/00; H03K3/02; H03K3/33
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
IN A SIGNAL SWITCHING NETWORK, A BISTABLE TUNNEL DIODE SWITCHING ELEMENT, A SOURCE OF PERIODIC CURRENT PULSES, A CHARGE STORING SEMICONDUCTOR COUPLING SAID SOURCE TO SAID TUNNEL DIODE, INPUT TERMINALS COUPLED TO SAID SEMICONDUCTOR, MEANS FOR SELECTIVELY STORING CHARGE IN SAID SEMICONDUCTOR ONLY IN RESPONSE TO A PREDETERMINED SIGNAL AT SAID INPUT TERMINAL, AND OUTPUTT MEANS CONNECTED TO SAID BISTABLE SWITCHING ELEMENT, SAID SOURCE ADAPTED TO PRODUCE A SWITCHING CURRENT PULSE AT SAID BISTABLE SWITCHING ELEMENT VIA SAID SEMICONDUCTOR ONLY SUBSEQUENT TO THE STORAGE OF CHARGE IN SAID SEMICONDUCTOR.
Claim 2
Dependent Claim
89 words
IN A SIGNAL SWITCHING NETWORK, A BISTABLE TUNNEL DIODE SWITCHING ELEMENT, A SOURCE OF PERIODIC CURRENT PULSES, A CHARGE STORING SEMICONDUCTOR COUPLING SAID SOURCE TO SAID TUNNEL DIODE, INPUT TERMINALS COUPLED TO SAID SEMICONDUCTOR, MEANS FOR SELECTIVELY STORING CHARGE IN SAID SEMICONDUCTOR ONLY IN RESPONSE TO A PREDETERMINED SIGNAL AT SAID INPUT TERMINAL, AND OUTPUTT MEANS CONNECTED TO SAID BISTABLE SWITCHING ELEMENT, SAID SOURCE ADAPTED TO PRODUCE A SWITCHING CURRENT PULSE AT SAID BISTABLE SWITCHING ELEMENT VIA SAID SEMICONDUCTOR ONLY SUBSEQUENT TO THE STORAGE OF CHARGE IN SAID SEMICONDUCTOR.
References Cited (Backward Citations)
US2737601A
Cited
US2823321A
Cited
US3106644A
Cited
US3071700A
Cited
US3040186A
Cited
US3182204A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-04 | 1969-10-04 | 1970-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-04 | 1973-10-04 | 1974-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-04 | 1977-10-04 | 1978-04-05 | $7700.00 | Window Closed / Lapsed |