US3353012A
Expired / Lapsed
US
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Transistorized multiplication circuit
Assignee: Allis Chalmers Corp
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Filing: 1963-10-01
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Granted: 1967-11-14
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Expires: 1983-10-01
Abstract
No abstract record available.
Inventors
- 👤 Baude John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:38
CPC Classifications
G; G06; G06G; G06G7/00; G06G7/12; G06G7/16; G06G7/163
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
AN ELECTRICAL MULTIPLICATION CIRCUIT FOR PRODUCING AN OUTPUT PROPORTIONAL TO A FIRST AND SECOND INPUT COMPRISING: A TRANSISTOR CONNECTED TO OPERATE IN A LINEAR PORTION OF ITS CHARACTERISTIC CURVE HAVING AN INPUT CIRCUIT CONNECTED TO RECEIVE THE SECOND INPUT AND HAVING AN OUTPUT CIRCUIT; A RESISTANCE CONNECTED IN SERIES WITH THE TRANSISTOR OUTPUT CIRCUIT TO FORM A SERIES CIRCUIT, SAID SERIES CIRCUIT CONNECTED TO RECEIVE THE FIRST INPUT ACROSS THE SERIES CIRCUIT; AND A POTENTIOMETER CONNECTED IN PARALLEL WITH THE SERIES CIRCUIT, SAID POTENTIOMETER HAVING A TAP, SAID TAP ADJUSTED SO THAT THE POTENTIAL BETWEEN SAID TAP AND A POINT IN THE SERIES CIRCUIT BETWEEN THE RESISTANCE AND THE TRANSISTOR OUTPUT CIRCUIT IS PROPORTIONAL TO THE FIRST AND SECOND INPUT.
Claim 2
Dependent Claim
120 words
AN ELECTRICAL MULTIPLICATION CIRCUIT FOR PRODUCING AN OUTPUT PROPORTIONAL TO A FIRST AND SECOND INPUT COMPRISING: A TRANSISTOR CONNECTED TO OPERATE IN A LINEAR PORTION OF ITS CHARACTERISTIC CURVE HAVING AN INPUT CIRCUIT CONNECTED TO RECEIVE THE SECOND INPUT AND HAVING AN OUTPUT CIRCUIT; A RESISTANCE CONNECTED IN SERIES WITH THE TRANSISTOR OUTPUT CIRCUIT TO FORM A SERIES CIRCUIT, SAID SERIES CIRCUIT CONNECTED TO RECEIVE THE FIRST INPUT ACROSS THE SERIES CIRCUIT; AND A POTENTIOMETER CONNECTED IN PARALLEL WITH THE SERIES CIRCUIT, SAID POTENTIOMETER HAVING A TAP, SAID TAP ADJUSTED SO THAT THE POTENTIAL BETWEEN SAID TAP AND A POINT IN THE SERIES CIRCUIT BETWEEN THE RESISTANCE AND THE TRANSISTOR OUTPUT CIRCUIT IS PROPORTIONAL TO THE FIRST AND SECOND INPUT.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-13 | 1971-05-15 | 1971-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-13 | 1975-05-15 | 1975-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-13 | 1979-05-15 | 1979-11-14 | $7700.00 | Window Closed / Lapsed |