Patent US3360730A successfully refreshed from Google Patents.
US3360730A
Expired / Lapsed
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Apparatus providing a-m radio reception of f-m
Assignee: Individual
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Filing: 1964-10-16
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Granted: 1967-12-26
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Expires: 1984-10-16
Abstract
No abstract record available.
Inventors
- 👤 David E Sims
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:55
CPC Classifications
H; H03; H03D; H03D5/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
141 words
A RADIO FREQUENCY SIGNAL RECEIVING SYSTEM COMPRISING: AN A-M RADIO RECEIVER HAVING FIRST ANTENNA MEANS FOR RECEPTION OF RADIO FREQUENCY SIGNALS; SECOND ANTENNA MEANS FOR RECEPION OF RADIO FREQUENCY SIGNALS; AN INPUT CIRCUIT CONNECTED TO SAID SECOND ANTENNA AND TUNED TO THE FREQUENCY OF AN F-M CARRIER SIGNAL TO BE RECEIVED; A FIRST TRANSISTOR HAVING A CONTROL CIRCUIT COUPLED TO SAID INPUT, AND SAID FIRST TRANSISTOR HAVING A LOAD CIRCUIT WITH AN OUTPUT INDUCTOR THEREIN; A TRANSISTOR OSCILLATOR HAVING AN OUTPUT CIRCUIT COUPLED TO SAID FIRST TRANSISTOR TO PRODUCE AN INTERMEDIATE FREQUENCY OUTPUT IN SAID OUTPUT INDUCTOR, SAID FIRST TRANSISTOR FUNCTIONING AS A RADIO FREQUENCY AMPLIFIR AND MIXER; SAID OUTPUT INDUCTOR BEING COUPLED TO SAID FIRST ANTENNA MEANS ONLY INDUCTIVELY AND EXCLUSIVELY OF ANY MECHANICAL CONNECTION THEREBETWEEN, WHEREBY INFORMATION IN SAID F-M CARRIER IS AUDIBLY PRODUCED BY SAID A-M RADIO RECEIVER.
References Cited (Backward Citations)
CA632917A
Cited
US3054058A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-12-25 | 1971-06-26 | 1971-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-25 | 1975-06-26 | 1975-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-25 | 1979-06-26 | 1979-12-26 | $7700.00 | Window Closed / Lapsed |