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Hidefumi Takegahara
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Ibaraki, JP
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last 30 patents
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Patent Grant
Output correcting method in control system, control system, and hyd...
Patent number
6,101,456
Issue date
Aug 8, 2000
Hitachi Construction Machinery Co., Ltd.
Youichi Kowatari
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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Patent Grant
Drive control system for hydraulic machine
Patent number
5,497,805
Issue date
Mar 12, 1996
Hitachi Construction Machinery Co., Ltd.
Kazuhiro Sunamura
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING