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Multiplex control system
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Patent number 5,095,418
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Issue date Mar 10, 1992
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Hitachi, Ltd.
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Setsuo Arita
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G06 - COMPUTING CALCULATING COUNTING
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Multiplex control system
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Patent number 4,989,129
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Issue date Jan 29, 1991
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Hitachi, Ltd.
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Setsuo Arita
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G06 - COMPUTING CALCULATING COUNTING
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Control system
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Patent number 4,843,537
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Issue date Jun 27, 1989
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Hitachi, Ltd.
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Setsuo Arita
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G06 - COMPUTING CALCULATING COUNTING
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