Patent US3293424A successfully refreshed from Google Patents.
US3293424A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Analog multiplier
Assignee: North American Aviation Corp
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Filing: 1963-05-28
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Granted: 1966-12-20
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Expires: 1983-05-28
Abstract
No abstract record available.
Inventors
- 👤 Fisher Benjamin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:07
CPC Classifications
G; G06; G06G; G06G7/00; G06G7/12; G06G7/16; G06G7/163
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
MEANS FOR MULTIPLYING A FIRST AND THIRD SIGNAL COMPRISING GAIN-CONTROLLED MEANS HAVIG A GAIN-CONTROL INPUT AND FURTHER HAVING A SIGNAL INPUT ADAPTED TO BE CONNECTED TO A FIRST AND SECOND SIGNAL SOURCE; SIGNAL-COMBINING MEANS FOR DIFFERENTIALLY COMBINING AT LEAST ONE OF THE OUTPUTS OF SAID FIRST AND SECOND SIGNAL SOURCES WITH THE OUTPUT FROM SAID GAIN-CONTROLLED MEANS, SAID GAIN-CONTROL INPUT BEING RESPONSIVELY CONNECTED TO THE OUTPUT OF SAID GAIN-CONTROLLED MEANS FOR AUTOMATICALLY ADJUSTING THE GAIN OF SAID GAIN-CONTROLLED MEANS; AND SIGNAL CODE MEANS FOR SUPPRESSING FROM SAID GAINCONTROL INPUT THAT COMPONENT OF THE OUTPUT OF SAID GAIN-CONTROLLED MEANS CORRESPONDING TO SAID FIRST SIGNAL, SAID GAIN-CONTROL INPUT BEING ADAPTED TO BE FURTHER RESPONSIVELY CONNECTED TO A THIRD SIGNAL SURCE, WHEREBY THE OUTPUT OF SAID SIGNAL-COMBINING MEANS IS INDICATIVE OF THE PRODUCT OF SUCH FIRST AND THIRD SIGNALS.
Claim 2
Dependent Claim
136 words
MEANS FOR MULTIPLYING A FIRST AND THIRD SIGNAL COMPRISING GAIN-CONTROLLED MEANS HAVIG A GAIN-CONTROL INPUT AND FURTHER HAVING A SIGNAL INPUT ADAPTED TO BE CONNECTED TO A FIRST AND SECOND SIGNAL SOURCE; SIGNAL-COMBINING MEANS FOR DIFFERENTIALLY COMBINING AT LEAST ONE OF THE OUTPUTS OF SAID FIRST AND SECOND SIGNAL SOURCES WITH THE OUTPUT FROM SAID GAIN-CONTROLLED MEANS, SAID GAIN-CONTROL INPUT BEING RESPONSIVELY CONNECTED TO THE OUTPUT OF SAID GAIN-CONTROLLED MEANS FOR AUTOMATICALLY ADJUSTING THE GAIN OF SAID GAIN-CONTROLLED MEANS; AND SIGNAL CODE MEANS FOR SUPPRESSING FROM SAID GAINCONTROL INPUT THAT COMPONENT OF THE OUTPUT OF SAID GAIN-CONTROLLED MEANS CORRESPONDING TO SAID FIRST SIGNAL, SAID GAIN-CONTROL INPUT BEING ADAPTED TO BE FURTHER RESPONSIVELY CONNECTED TO A THIRD SIGNAL SURCE, WHEREBY THE OUTPUT OF SAID SIGNAL-COMBINING MEANS IS INDICATIVE OF THE PRODUCT OF SUCH FIRST AND THIRD SIGNALS.
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) | 1969-12-19 | 1970-06-20 | 1970-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-19 | 1974-06-20 | 1974-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-19 | 1978-06-20 | 1978-12-20 | $7700.00 | Window Closed / Lapsed |