US3109147A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nonreciprocal wave translating network
Assignee: AT&T Inc
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Filing: 1959-10-30
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Granted: 1963-10-29
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Expires: 1979-10-30
Abstract
No abstract record available.
Inventors
- 👤 Francis J Witt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:41
CPC Classifications
H; H03; H03H; H03H11/00; H03H11/02; H03H11/40; H03H11/42
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
125 words
A GYRATOR CIRCUIT COMPRISING TWO FOUR-TERMINAL NETWORKS EACH HAVING A FIRST AND SECOND INPUT TERMINAL AND A FIRST AND SECOND OUTPUT TERMINAL, SAID INPUT TERMINALS OF SAID FIRST NETWORKS BEING CONNECTED IN PARALLEL WITH SAID OUTPUT TERMINALS OF SAID SECOND NETWORK TO FORM THE INPUT TERMINALS OF SAID CIRCUIT, SAID FIRST OUTPUT TERMINAL OF SAID FIRST NETWORK BEING CONNECTED TO SAID FIRST INPUT TERMINAL OF SAID SECOND NETWORK TO FORM ONE OUTPUT TERMINAL OF SAID CIRCUIT, SAID SECOND INPUT TERMINAL OF SAID SECOND NETWORK BEING THE OTHER OUTPUT TERMINAL OF SAID CIRCUIT, SAID FIRST NETWORK COMPRISING, IN CASCADE, VOLTAGE PHASE INVERTING MEANS, A VOLTAGE AMPLIFIER, A VOLTAGE-TOCURRENT TRANSDUCER, AND A CURRENT AMPLIFIER, AND SAID SECOND NETWORK COMPRISING, IN CASCADE, A VOLTAGE AMPLIFIER AND VOLTAGE-TO-CURRENT TRANSDUCER.
References Cited (Backward Citations)
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-10-28 | 1967-04-29 | 1967-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-28 | 1971-04-29 | 1971-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-28 | 1975-04-29 | 1975-10-29 | $7700.00 | Window Closed / Lapsed |