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US3360730A Expired / Lapsed US ⏱️ 0.0 years remaining

Apparatus providing a-m radio reception of f-m

Assignee: Individual
•
Filing: 1964-10-16
•
Granted: 1967-12-26
•
Expires: 1984-10-16
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Abstract

No abstract record available.

Inventors

  • 👤 David E Sims

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 06:04
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

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