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Tadahiko Iijima
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Hitachi, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Servo valve control apparatus
Patent number
5,214,913
Issue date
Jun 1, 1993
Hitachi, Ltd.
Yukiyoshi Tani
G05 - CONTROLLING REGULATING
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Patent Grant
Process control system and method thereof
Patent number
4,825,352
Issue date
Apr 25, 1989
Hitachi, Ltd.
Tadahiko Iijima
G06 - COMPUTING CALCULATING COUNTING