Patent US3401349A successfully refreshed from Google Patents.
US3401349A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wide band high frequency amplifier
Assignee: RCA Corp
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Filing: 1966-11-02
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Granted: 1968-09-10
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Expires: 1986-11-02
Abstract
No abstract record available.
Inventors
- 👤 Muni M Mitchell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:22
CPC Classifications
H; H03; H03F; H03F1/00; H03F1/08; H03F1/22; H03F1/223; H03F3/00; H03F3/189; H03F3/19; H03F3/193; H03G; H03G1/00; H03G1/0005; H03G1/0017; H03G1/0029; H10; H10D; H10D30/00; H10D30/60; H10D84/00; H10D84/80; H10D84/82; H10D84/83
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A WIDEBAND AMPLIFIER COMPRISING: FIRST AND SECOND FIELD EFFECT TRANSISTORS, EACH HAVING GATE, SOURCE AND DRAIN ELECTRODES FORMED ON A SUBSTRATE OF SEMICONDUCTOR MATERIAL; AN INPUT SIGNAL CIRCUIT COUPLED BETWEEN THE GATE AND SOURCE ELECTRODES OF SAID FIRST TRANSISTOR; FIRST MEANS CONNECTING THE SOURCE ELECTRODE OF SAID FIRST TRANSISTOR TO A POINT OF REFERENCE POTENTIAL; SECOND MEANS COUPLING THE DRAIN ELECTRODE OF SAID FIRST TRANSISTOR TO THE SOURCE ELECTRODE OF SAID SECOND TRANSISTOR; AN OUTPUT SIGNAL CIRCUIT COUPLED BETWEEN THE DRAIN ELECTRODE OF SAID SECOND TRANSISTOR AND SAID POINT OF REFERENCE POTENTIAL;
Claim 2
Dependent Claim
92 words
A WIDEBAND AMPLIFIER COMPRISING: FIRST AND SECOND FIELD EFFECT TRANSISTORS, EACH HAVING GATE, SOURCE AND DRAIN ELECTRODES FORMED ON A SUBSTRATE OF SEMICONDUCTOR MATERIAL; AN INPUT SIGNAL CIRCUIT COUPLED BETWEEN THE GATE AND SOURCE ELECTRODES OF SAID FIRST TRANSISTOR; FIRST MEANS CONNECTING THE SOURCE ELECTRODE OF SAID FIRST TRANSISTOR TO A POINT OF REFERENCE POTENTIAL; SECOND MEANS COUPLING THE DRAIN ELECTRODE OF SAID FIRST TRANSISTOR TO THE SOURCE ELECTRODE OF SAID SECOND TRANSISTOR; AN OUTPUT SIGNAL CIRCUIT COUPLED BETWEEN THE DRAIN ELECTRODE OF SAID SECOND TRANSISTOR AND SAID POINT OF REFERENCE POTENTIAL;
References Cited (Backward Citations)
US2795655A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-10 | 1972-03-11 | 1972-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-10 | 1976-03-11 | 1976-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-10 | 1980-03-11 | 1980-09-10 | $7700.00 | Window Closed / Lapsed |