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Signal amplifying circuit
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Patent number 4,021,749
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Issue date May 3, 1977
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Sony Corporation
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Yoshio Ishigaki
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H03 - BASIC ELECTRONIC CIRCUITRY
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Gain control circuits
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Patent number 3,988,692
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Issue date Oct 26, 1976
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Sony Corporation
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Yoshio Ishigaki
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H03 - BASIC ELECTRONIC CIRCUITRY
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Signal switching apparatus
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Patent number 3,986,051
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Issue date Oct 12, 1976
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Sony Corporation
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Takashi Okada
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H03 - BASIC ELECTRONIC CIRCUITRY
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Non-linear amplifier
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Patent number 3,986,048
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Issue date Oct 12, 1976
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Sony Corporation
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Takashi Okada
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G06 - COMPUTING CALCULATING COUNTING
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Non-linear amplifier
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Patent number 3,935,478
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Issue date Jan 27, 1976
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Sony Corporation
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Takashi Okada
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G06 - COMPUTING CALCULATING COUNTING