Patent US3104357A successfully refreshed from Google Patents.
US3104357A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radio receiver
Assignee: Motorola Solutions Inc
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Filing: 1960-07-05
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Granted: 1963-09-17
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Expires: 1980-07-05
Abstract
No abstract record available.
Inventors
- 👤 Birkenes Bernhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:21
CPC Classifications
H; H03; H03G; H03G3/00; H03G3/20; H03G3/30; H03G3/3052; H03G3/3068
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
A TRANSISTORIZED RADIO RECEIVER INCLUDING A RADIO FREQUENCY AMPLIFIER STAGE HAVING A FIRST TRANSISTOR WITH INPUT AND OUTPUT ELECTRODES, A MIXER STAGE, A LOCAL OSCILLATOR STAGE FOR INJECTING A SIGNAL TO SAID MIXER STAGE, SAID LOCAL OSCILLATOR STAGE HAVING A SECOND TRANSISTOR WITH A GAIN CONTROLLING ELECTRODE, DETECTOR MEANS FOR PRODUCING A CONTROL SIGNAL REPRESENTING THE LEVEL OF A RECEIVED SIGNAL, FIRST DIRECT CURRENT COUPLING MEANS COUPLING SAID DETECTOR MEANS TO SAID INPUT ELECTRODE OF SAID FIRST TRANSISTOR FOR VARIABLY BIASING SAID FIRST TRANSISTOR ACCORDING TO THE LEVEL OF THE RECEIVED SIGNAL, SECOND DIRECT CURRENT COUPLING MEANS COUPLING SAID OUTPUT ELECTRODE OF SAID FIRST TRANSISTOR TO SAID GAIN CONTROLLING ELECTRODE OF SAID SECOND
Claim 2
Dependent Claim
113 words
A TRANSISTORIZED RADIO RECEIVER INCLUDING A RADIO FREQUENCY AMPLIFIER STAGE HAVING A FIRST TRANSISTOR WITH INPUT AND OUTPUT ELECTRODES, A MIXER STAGE, A LOCAL OSCILLATOR STAGE FOR INJECTING A SIGNAL TO SAID MIXER STAGE, SAID LOCAL OSCILLATOR STAGE HAVING A SECOND TRANSISTOR WITH A GAIN CONTROLLING ELECTRODE, DETECTOR MEANS FOR PRODUCING A CONTROL SIGNAL REPRESENTING THE LEVEL OF A RECEIVED SIGNAL, FIRST DIRECT CURRENT COUPLING MEANS COUPLING SAID DETECTOR MEANS TO SAID INPUT ELECTRODE OF SAID FIRST TRANSISTOR FOR VARIABLY BIASING SAID FIRST TRANSISTOR ACCORDING TO THE LEVEL OF THE RECEIVED SIGNAL, SECOND DIRECT CURRENT COUPLING MEANS COUPLING SAID OUTPUT ELECTRODE OF SAID FIRST TRANSISTOR TO SAID GAIN CONTROLLING ELECTRODE OF SAID SECOND
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) | 1966-09-16 | 1967-03-18 | 1967-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-16 | 1971-03-18 | 1971-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-16 | 1975-03-18 | 1975-09-17 | $7700.00 | Window Closed / Lapsed |