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Takashi Yagyuu
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Ibaraki, JP
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last 30 patents
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Patent Grant
Hydraulic driving system of construction machinery
Patent number
7,500,360
Issue date
Mar 10, 2009
Hitachi Constuction Machinery Co., Ltd.
Tsutomu Udagawa
F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Patents Applications
last 30 patents
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Patent Application
Hydraulic driving system of construction machinery
Publication number
20050175485
Publication date
Aug 11, 2005
Tsutomu Udagawa
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING