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Television sound receiver
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Patent number 4,455,573
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Issue date Jun 19, 1984
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Sony Corporation
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Yoshihiro Yamamoto
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Television sound receiver
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Patent number 4,419,695
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Issue date Dec 6, 1983
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Sony Corporation
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Yoshihiro Yamamoto
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Muting circuit
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Patent number 4,238,771
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Issue date Dec 9, 1980
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Sony Corporation
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Masayuki Hongu
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Oscillating circuit
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Patent number 4,169,248
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Issue date Sep 25, 1979
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Sony Corporation
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Masayuki Hongu
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H03 - BASIC ELECTRONIC CIRCUITRY
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Multi-band tuner
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Patent number 4,115,737
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Issue date Sep 19, 1978
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Sony Corporation
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Masayuki Hongu
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Amplifying circuit
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Patent number 4,110,635
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Issue date Aug 29, 1978
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Sony Corporation
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Masayuki Hongu
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H04 - ELECTRIC COMMUNICATION TECHNIQUE