US3172048A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Parametric amplifier with plural parallel nonlinear reactors and idler circuits
Assignee: Telefunken Patentverwertungs GmbH
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Filing: 1961-07-31
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Granted: 1965-03-02
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Expires: 1981-07-31
Abstract
No abstract record available.
Inventors
- 👤 Ohnsorge Horst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:07
CPC Classifications
H; H03; H03F; H03F7/00; H03F7/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
A PARAMETRIC AMPLIFIER, COMPRISING, IN COMBINATION: A SIGNAL CIRCUIT; A PLURALITY OF ADDITIONAL CIRCUITS EACH BEING CONNECTED IN PARALLEL WITH SAID SIGNAL CIRCUIT AND EACH INCLUDING A NONLINEAR REACTANCE AND A RESONANT IDLING CIRCUIT; AND MEANS FOR FEEDING AT LEAST ONE PUMP FREQUENCY TO SAID CIRCUITS.
Claim 2
Dependent Claim
46 words
A PARAMETRIC AMPLIFIER, COMPRISING, IN COMBINATION: A SIGNAL CIRCUIT; A PLURALITY OF ADDITIONAL CIRCUITS EACH BEING CONNECTED IN PARALLEL WITH SAID SIGNAL CIRCUIT AND EACH INCLUDING A NONLINEAR REACTANCE AND A RESONANT IDLING CIRCUIT; AND MEANS FOR FEEDING AT LEAST ONE PUMP FREQUENCY TO SAID CIRCUITS.
References Cited (Backward Citations)
US3042867A
Cited
US3045189A
Cited
DE1081515B
Cited
US3040267A
Cited
FR1238790A
Cited
US3076149A
Cited
US3070751A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-01 | 1968-08-31 | 1969-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-01 | 1972-08-31 | 1973-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-01 | 1976-08-31 | 1977-03-02 | $7700.00 | Window Closed / Lapsed |