US3296539A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulse-counter demodulator
Assignee: Ampex Corp
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Filing: 1964-03-02
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Granted: 1967-01-03
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Expires: 1984-03-02
Abstract
No abstract record available.
Inventors
- 👤 Michael O Felix
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:54
CPC Classifications
H; H03; H03D; H03D3/00; H03D3/02; H03D3/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
A PULSE-COUNTER DEMODULATOR COMPRISING: AN INPUT TERMINAL, A DIFFERENTIATING CAPACITOR COUPLED TO THE INPUT TERMINAL, A PUSH-PULL TRANSFORMER WITH ITS CENTER DIRECTLY COUPLED TO GROUND, WITH ONE END DIRECTLY COUPLED TO THE DIFFERENTIATING CAPACITOR AND THROUGH A FIRST RESISTOR TO GROUND, AND WITH A SECOND END COUPLED THROUGH A SECOND RESISTOR TO GROUND, A FIRST ACTIVE ELEMENT HAVING CONTROL ELECTRODE AND OUTPUT ELECTRODE, THE CONTROL ELECTRODE OF THE FIRST ACTIVE ELEMENT BEING COUPLED BETWEEN THE TRANSFORMER AND THE FIRST RESISTOR AND THE OUTPUT ELECTRODE OF THE FIRST ACTIVE ELEMENT BEING COUPLED THROUGH A THIRD RESISTOR TO AN OUTPUT TERMINAL FOR THE DEMODULATOR CIRCUIT, A SECOND ACTIVE ELEMENT HAVING INPUT, OUTPUT, AND CONTROL
Claim 2
Dependent Claim
112 words
A PULSE-COUNTER DEMODULATOR COMPRISING: AN INPUT TERMINAL, A DIFFERENTIATING CAPACITOR COUPLED TO THE INPUT TERMINAL, A PUSH-PULL TRANSFORMER WITH ITS CENTER DIRECTLY COUPLED TO GROUND, WITH ONE END DIRECTLY COUPLED TO THE DIFFERENTIATING CAPACITOR AND THROUGH A FIRST RESISTOR TO GROUND, AND WITH A SECOND END COUPLED THROUGH A SECOND RESISTOR TO GROUND, A FIRST ACTIVE ELEMENT HAVING CONTROL ELECTRODE AND OUTPUT ELECTRODE, THE CONTROL ELECTRODE OF THE FIRST ACTIVE ELEMENT BEING COUPLED BETWEEN THE TRANSFORMER AND THE FIRST RESISTOR AND THE OUTPUT ELECTRODE OF THE FIRST ACTIVE ELEMENT BEING COUPLED THROUGH A THIRD RESISTOR TO AN OUTPUT TERMINAL FOR THE DEMODULATOR CIRCUIT, A SECOND ACTIVE ELEMENT HAVING INPUT, OUTPUT, AND CONTROL
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) | 1970-01-02 | 1970-07-04 | 1971-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-02 | 1974-07-04 | 1975-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-02 | 1978-07-04 | 1979-01-03 | $7700.00 | Window Closed / Lapsed |