US3254238A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Current steering logic circuits having negative resistance diodes connected in the output biasing networks of the amplifying devices
Assignee: RCA Corp
•
Filing: 1963-12-23
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Granted: 1966-05-31
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Expires: 1983-12-23
Abstract
No abstract record available.
Inventors
- 👤 Cooperman Michael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:19
CPC Classifications
H; H03; H03K; H03K19/00; H03K19/02; H03K19/08; H03K19/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
THE COMBINATION ACOMPRISING: A PAIR OF AMPLIFYING DEVICES, EACH DEVICE HAVING INPUT AND OUTPUT ELECTRODES DEFINING A CURRENT CARRYING PATH, AND A CONTROL ELECTRODE; A CURRENT SUPPLY OF I MILLIAMPERES; A PAIR OF NEGATIVE RESISTANCE DEVICES EACH HAVING A VOLTAMPERE CHARACTERISTIC DEFINED BY FIRST AND SECOND REGIONS OF POSITIVE RESISTANCE SEPARATED BY A REGION OF NEGATIVE RESISTANCE, EACH DEVICE HAVING A PEAK CURRENT WHICH IS LESS THAN I AND GREATER THAN 1/2; MEANS CONNECTING THE CURRENT CARRYING PATH OF EACH AMPLIFYING DEVICE IN SERIES WITH A DIFFERENT NEGATIVE RESISTANCE DEVICE ACROSS SAID CURRENT SUPPLY; A PAIR OF INPUT TERMINALS, EACH BEING COUPLED TO A DIFFERENT CONTROL ELECTRODE; AND MEANS COUPLED TO THE CONTROL ELECTRODES FOR BIASING BOTH AMPLIFYING DEVICES INTO CONDUCTION IN THE ABSENCE OF INPUT SIGNALS APPLIED AT EITHER ONE OF THE
Claim 2
Dependent Claim
133 words
THE COMBINATION ACOMPRISING: A PAIR OF AMPLIFYING DEVICES, EACH DEVICE HAVING INPUT AND OUTPUT ELECTRODES DEFINING A CURRENT CARRYING PATH, AND A CONTROL ELECTRODE; A CURRENT SUPPLY OF I MILLIAMPERES; A PAIR OF NEGATIVE RESISTANCE DEVICES EACH HAVING A VOLTAMPERE CHARACTERISTIC DEFINED BY FIRST AND SECOND REGIONS OF POSITIVE RESISTANCE SEPARATED BY A REGION OF NEGATIVE RESISTANCE, EACH DEVICE HAVING A PEAK CURRENT WHICH IS LESS THAN I AND GREATER THAN 1/2; MEANS CONNECTING THE CURRENT CARRYING PATH OF EACH AMPLIFYING DEVICE IN SERIES WITH A DIFFERENT NEGATIVE RESISTANCE DEVICE ACROSS SAID CURRENT SUPPLY; A PAIR OF INPUT TERMINALS, EACH BEING COUPLED TO A DIFFERENT CONTROL ELECTRODE; AND MEANS COUPLED TO THE CONTROL ELECTRODES FOR BIASING BOTH AMPLIFYING DEVICES INTO CONDUCTION IN THE ABSENCE OF INPUT SIGNALS APPLIED AT EITHER ONE OF THE
References Cited (Backward Citations)
US3102208A
Cited
US3102209A
Cited
US3076105A
Cited
US3161781A
Cited
US3127525A
Cited
US3144565A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-30 | 1969-11-29 | 1970-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-30 | 1973-11-29 | 1974-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-30 | 1977-11-29 | 1978-05-31 | $7700.00 | Window Closed / Lapsed |