US3073970A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resistor coupled transistor logic circuitry
Assignee: Westinghouse Electric Corp
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Filing: 1960-11-25
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Granted: 1963-01-15
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Expires: 1980-11-25
Abstract
No abstract record available.
Inventors
- 👤 Richard L Bright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:06
CPC Classifications
H; H03; H03K; H03K19/00; H03K19/02; H03K19/08; H03K19/082; H03K19/084; H03K19/09
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
137 words
A CIRCUIT COMPRISING, IN COMBINATION; A SEMI-CONDUCTIVE DEVICE HAVING AT LEAST A CONTROL ELECTRODE, A COLLECTOR ELECTRODE AND AN EMITTER ELECTRODE; A PLURALITY OF FIRST IMPEDANCE ELEMENTS; A LIKE PLURALITY OF SECOND IMPEDANCE ELEMENTS; A THIRD IMPEDANCE ELEMENT; A LIKE PLURALITY OF INPUT TERMINALS EACH CONNECTED THROUGH A RESPECTIVE SECOND IMPEDANCE ELEMENT TO SAID CONTROL ELECTRODE; MEANS FOR PROVIDING A POWER SUPPLY OF PREDETERMINED POLARITY, CONNECTED THROUGH SAID THIRD IMPEDANCE ELEMENT TO SAID CONTROL ELECTRODE PROVIDING A CURRENT OF PREDETERMINED DIRECTION THERETHROUGH; MEANS FOR PROVIDING A POWER SUPPLY OF OPPOSITE POLARITY, CONNECTED THROUGH A RESPECTIVE FIRST IMPEDANCE TO A RESPECTIVE INPUT TERMINAL PROVIDING A CONTROL CURRENT OF OPPOSITE DIRECTION THROUGH SAID CONTROL ELECTRODE; SAID CONTROL CURRENT OF OPPOSITE DIRECTION BEING SUBSTANTIALLY DIVERTED FROM SAID CONTROL ELECTRODE IN RESPONSE TO AN INPUT SIGNAL TO SAID RESPECTIVE INPUT TERMINAL.
References Cited (Backward Citations)
US2950461A
Cited
US2964653A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-14 | 1966-07-16 | 1967-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-14 | 1970-07-16 | 1971-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-14 | 1974-07-16 | 1975-01-15 | $7700.00 | Window Closed / Lapsed |