Patent US3217181A successfully refreshed from Google Patents.
US3217181A
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Logic switching circuit comprising a plurality of discrete inputs
Assignee: RCA Corp
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Filing: 1962-09-11
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Granted: 1965-11-09
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Expires: 1982-09-11
Abstract
No abstract record available.
Inventors
- 👤 Zuk Borys
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:50
CPC Classifications
H; H03; H03K; H03K19/00; H03K19/02; H03K19/08; H03K19/082; H03K19/086; H03K19/01; H03K19/013
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
THE COMBINATION COMPRISING: A PLURALITY OF INPUT TRANSISTORS OF A FIRST CONDUCTIVITY TYPE EACH CONNECTED IN THE COMMON COLLECTOR CONFIGURATION AND EACH HAVING A BASE ELECTRODE AND AN EMITTER ELECTRODE; A RESISTOR CONNECTED DIRECTLY IN COMMON WITH THE EMITTER ELECTRODE OF EACH INPUT TRANSISTOR; A SEPARATE INPUT TERMINAL FOR EACH SAID BASE ELECTRODE; AN OUTPUT TRANSISTOR OF OPPOSITE CONDUCTIVITY TYPE CONNECTED IN THE COMMON EMITTER CONFIGURATION AND HAVING A BASE ELECTRODE AND A COLLECTOR ELECTRODE;
Claim 2
Dependent Claim
75 words
THE COMBINATION COMPRISING: A PLURALITY OF INPUT TRANSISTORS OF A FIRST CONDUCTIVITY TYPE EACH CONNECTED IN THE COMMON COLLECTOR CONFIGURATION AND EACH HAVING A BASE ELECTRODE AND AN EMITTER ELECTRODE; A RESISTOR CONNECTED DIRECTLY IN COMMON WITH THE EMITTER ELECTRODE OF EACH INPUT TRANSISTOR; A SEPARATE INPUT TERMINAL FOR EACH SAID BASE ELECTRODE; AN OUTPUT TRANSISTOR OF OPPOSITE CONDUCTIVITY TYPE CONNECTED IN THE COMMON EMITTER CONFIGURATION AND HAVING A BASE ELECTRODE AND A COLLECTOR ELECTRODE;
References Cited (Backward Citations)
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Cited
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US3020417A
Cited
US2962604A
Cited
US3031588A
Cited
US3079513A
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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) | 1968-11-08 | 1969-05-10 | 1969-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-08 | 1973-05-10 | 1973-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-08 | 1977-05-10 | 1977-11-09 | $7700.00 | Window Closed / Lapsed |