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MOS type semiconductor device
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Patent number 4,025,940
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Issue date May 24, 1977
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Matsushita Electric Industrial Co., Ltd.
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Takeji Kimura
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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Electronic organ
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Patent number 3,939,750
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Issue date Feb 24, 1976
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Matsushita Electric Industrial Co., Ltd.
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Michihiro Inoue
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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Ghost signal cancellation system
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Patent number 3,935,536
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Issue date Jan 27, 1976
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Matsushita Electric Industrial Co., Ltd.
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Takeji Kimura
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H04 - ELECTRIC COMMUNICATION TECHNIQUE