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Inversion prevention device
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Patent number 5,638,407
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Issue date Jun 10, 1997
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Mitsubishi Denki Kabushiki Kaisha
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Keiji Hatanaka
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Equalizer used for a VTR
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Patent number 5,631,997
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Issue date May 20, 1997
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Sanyo Electric Co., Ltd.
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Fukuji Anzai
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G11 - INFORMATION STORAGE
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Video equalizing circuit
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Patent number 5,276,517
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Issue date Jan 4, 1994
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Sony Corporation
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Hiroshi Matsuzawa
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Frequency demodulation circuit
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Patent number 4,959,620
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Issue date Sep 25, 1990
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Matsushita Electric Industrial Co., Ltd.
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Masahiro Honjo
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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