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US3244983A Expired / Lapsed US ⏱️ 0.0 years remaining

Continuously tunable direct reading high frequency converter

Assignee: General Dynamics Corp
•
Filing: 1963-03-06
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Granted: 1966-04-05
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Expires: 1983-03-06
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Abstract

No abstract record available.

Inventors

  • 👤 Robert J Ertman

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-22 20:46
CPC Classifications
H; H03; H03J; H03J1/00; H03J1/02; H03J1/04; H03J1/045; H03J1/047; H03J1/048

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 171 words
IN COMBINATION IN A TUNABLE CARRIER WAVE RECEIVER, A MIXER WITH A FIXED FREQUENCY INTERMEDIATE FREQUENCY BANDPASS, A TUNABLE CIRCUIT FOR RADIO FREQUENCIES FEEDING INTO SAID MIXER, A TUNABLE LOCAL OSCILLATOR, A TUNABLE MULTIPLIER CIRCUIT COUPLED TO SAID OSCILLATOR FOR GENERATING A FIXED MULTIPLE OF THE OSCILLATOR FREQUENCY, MEANS FOR INJECTING THE MULTIPLIED FREQUENCY INTO SAID MIXER ALONG WITH THE RADIO FREQUENCY, MEANS FOR TRACKING THE TUNING ELEMENTS OF THE RADIO FREQUENCY CIRCUITS, THE OSCILLATOR CIRCUITS AND THE MULTIPLIER CIRCUITS FOR GENERATING SAID FIXED INTERMEDIATE FREQUENCY, AND A FREQUENCY INDICATOR COMPRISING A SERIES OF DECIMAL COUNTER UNITS CONNECTED IN CASCADE, A GATE COUPLING SAID DECIMAL COUNTER UNITS TO SAID OSCILLATOR, A TIME B ASE GENERATOR FOR GENERATING A TIME BASE DECIMALLY RELATED TO ONE SECOND, AND MEANS COUPLED BETWEEN SAID TIME BASE GENERATOR AND SAID GATE FOR MULTIPLYING THE DURATION OF SAID MEASURED DECIMAL FRACTION BY A FACTOR EQUAL TO THE MULTIPLICATION FACTO OF SAID MULTIPLIER SO THAT SAID DECIMAL COUNTER UNITS WILL COUNT AT THE RATE OF THE INJECTION FREQUENCY.
Claim 2
Dependent Claim 171 words
IN COMBINATION IN A TUNABLE CARRIER WAVE RECEIVER, A MIXER WITH A FIXED FREQUENCY INTERMEDIATE FREQUENCY BANDPASS, A TUNABLE CIRCUIT FOR RADIO FREQUENCIES FEEDING INTO SAID MIXER, A TUNABLE LOCAL OSCILLATOR, A TUNABLE MULTIPLIER CIRCUIT COUPLED TO SAID OSCILLATOR FOR GENERATING A FIXED MULTIPLE OF THE OSCILLATOR FREQUENCY, MEANS FOR INJECTING THE MULTIPLIED FREQUENCY INTO SAID MIXER ALONG WITH THE RADIO FREQUENCY, MEANS FOR TRACKING THE TUNING ELEMENTS OF THE RADIO FREQUENCY CIRCUITS, THE OSCILLATOR CIRCUITS AND THE MULTIPLIER CIRCUITS FOR GENERATING SAID FIXED INTERMEDIATE FREQUENCY, AND A FREQUENCY INDICATOR COMPRISING A SERIES OF DECIMAL COUNTER UNITS CONNECTED IN CASCADE, A GATE COUPLING SAID DECIMAL COUNTER UNITS TO SAID OSCILLATOR, A TIME B ASE GENERATOR FOR GENERATING A TIME BASE DECIMALLY RELATED TO ONE SECOND, AND MEANS COUPLED BETWEEN SAID TIME BASE GENERATOR AND SAID GATE FOR MULTIPLYING THE DURATION OF SAID MEASURED DECIMAL FRACTION BY A FACTOR EQUAL TO THE MULTIPLICATION FACTO OF SAID MULTIPLIER SO THAT SAID DECIMAL COUNTER UNITS WILL COUNT AT THE RATE OF THE INJECTION FREQUENCY.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1969-04-04 1969-10-04 1970-04-05 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1973-04-04 1973-10-04 1974-04-05 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1977-04-04 1977-10-04 1978-04-05 $7700.00 Window Closed / Lapsed

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