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Radio frequency mixer
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Patent number 4,823,400
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Issue date Apr 18, 1989
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Zenith Electronics Corporation
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Pierre Dobrovolny
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H03 - BASIC ELECTRONIC CIRCUITRY
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Tuner device for a television receiver
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Patent number 4,214,212
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Issue date Jul 22, 1980
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Indesit Industria Elettrodomestici Italiana S.p.A.
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Edoardo Dipietromaria
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Broadband waveguide mixer
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Patent number 3,932,815
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Issue date Jan 13, 1976
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TRW Inc.
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Lloyd T. Yuan
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H03 - BASIC ELECTRONIC CIRCUITRY
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3783420
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Patent number 3,783,420
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Issue date Jan 1, 1974
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H03 - BASIC ELECTRONIC CIRCUITRY
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3646581
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Patent number 3,646,581
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Issue date Feb 29, 1972
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H03 - BASIC ELECTRONIC CIRCUITRY
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3584306
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Patent number 3,584,306
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Issue date Jun 8, 1971
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H03 - BASIC ELECTRONIC CIRCUITRY
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3576495
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Patent number 3,576,495
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Issue date Apr 27, 1971
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H03 - BASIC ELECTRONIC CIRCUITRY
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3423698
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Patent number 3,423,698
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Issue date Jan 21, 1969
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H03 - BASIC ELECTRONIC CIRCUITRY
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3378769
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Patent number 3,378,769
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Issue date Apr 16, 1968
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H03 - BASIC ELECTRONIC CIRCUITRY
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3339153
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Patent number 3,339,153
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Issue date Aug 29, 1967
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H03 - BASIC ELECTRONIC CIRCUITRY
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3310747
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Patent number 3,310,747
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Issue date Mar 21, 1967
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H03 - BASIC ELECTRONIC CIRCUITRY
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3299360
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Patent number 3,299,360
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Issue date Jan 17, 1967
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H03 - BASIC ELECTRONIC CIRCUITRY
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3296536
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Patent number 3,296,536
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Issue date Jan 3, 1967
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H03 - BASIC ELECTRONIC CIRCUITRY
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3292089
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Patent number 3,292,089
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Issue date Dec 13, 1966
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H03 - BASIC ELECTRONIC CIRCUITRY
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3252112
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Patent number 3,252,112
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Issue date May 17, 1966
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H03 - BASIC ELECTRONIC CIRCUITRY
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3242432
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Patent number 3,242,432
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Issue date Mar 22, 1966
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H03 - BASIC ELECTRONIC CIRCUITRY
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3237106
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Patent number 3,237,106
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Issue date Feb 22, 1966
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H03 - BASIC ELECTRONIC CIRCUITRY
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3197706
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Patent number 3,197,706
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Issue date Jul 27, 1965
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H03 - BASIC ELECTRONIC CIRCUITRY
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3166713
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Patent number 3,166,713
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H03 - BASIC ELECTRONIC CIRCUITRY
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3125725
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H03 - BASIC ELECTRONIC CIRCUITRY
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3092774
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Patent number 3,092,774
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Issue date Jun 4, 1963
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H03 - BASIC ELECTRONIC CIRCUITRY
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3071729
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Patent number 3,071,729
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Issue date Jan 1, 1963
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H03 - BASIC ELECTRONIC CIRCUITRY