US3120645A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nonreciprocal wave translating device
Assignee: AT&T Inc
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Filing: 1959-10-30
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Granted: 1964-02-04
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Expires: 1979-10-30
Abstract
No abstract record available.
Inventors
- 👤 Jack M Sipress
- 👤 Francis J Witt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:40
CPC Classifications
H; H03; H03H; H03H11/00; H03H11/02; H03H11/40; H03H11/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
A NONRECIPROCAL SIGNAL TRANSLATING NETWORK COMPRISING TWO SIGNAL PATHS, THE INPUT CIRCUIT OF ONE OF SAID PATHS BEING SERIALLY CONNECTED TO THE OUTPUT CIRCUIT OF THE OTHER OF SAID PATHS, THE INPUT CIRCUIT OF THE OTHER OF SAID PATHS BEING SERIALLY CONNECTED TO THE OUTPUT CIRCUIT OF SAID ONE PATH, SAID ONE PATH COMPRISING IN CASCADE A UNITY-GAIN CURRENT AMPLIFIER, A CURRENT-TO-VOLTAGE TRANSDUCER, A PHASE INVERTER AND A UNITY-GAIN VOLTAGE AMPLIFIER, SAID OTHER PATH COMPRISING A CURRENT-TO-VOLTAGE TRANSDUCER, MEANS FOR CONNECTING A SIGNAL SOURCE ACROSS ONE OF SAID SERIALLY CONNECTED INPUT AND OUTPUT CIRCUITS, AND MEANS FOR CONNECTING SIGNAL UTILIZATION MEANS ACROSS THE OTHER OF SAID SERIALLY CONNECTED INPUT AND OUTPUT CIRCUITS.
Claim 2
Dependent Claim
112 words
A NONRECIPROCAL SIGNAL TRANSLATING NETWORK COMPRISING TWO SIGNAL PATHS, THE INPUT CIRCUIT OF ONE OF SAID PATHS BEING SERIALLY CONNECTED TO THE OUTPUT CIRCUIT OF THE OTHER OF SAID PATHS, THE INPUT CIRCUIT OF THE OTHER OF SAID PATHS BEING SERIALLY CONNECTED TO THE OUTPUT CIRCUIT OF SAID ONE PATH, SAID ONE PATH COMPRISING IN CASCADE A UNITY-GAIN CURRENT AMPLIFIER, A CURRENT-TO-VOLTAGE TRANSDUCER, A PHASE INVERTER AND A UNITY-GAIN VOLTAGE AMPLIFIER, SAID OTHER PATH COMPRISING A CURRENT-TO-VOLTAGE TRANSDUCER, MEANS FOR CONNECTING A SIGNAL SOURCE ACROSS ONE OF SAID SERIALLY CONNECTED INPUT AND OUTPUT CIRCUITS, AND MEANS FOR CONNECTING SIGNAL UTILIZATION MEANS ACROSS THE OTHER OF SAID SERIALLY CONNECTED INPUT AND OUTPUT CIRCUITS.
References Cited (Backward Citations)
US2273997A
Cited
US3001157A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-02-03 | 1967-08-05 | 1968-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-03 | 1971-08-05 | 1972-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-03 | 1975-08-05 | 1976-02-04 | $7700.00 | Window Closed / Lapsed |