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Ultrasonic flaw detector
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Patent number 5,335,547
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Issue date Aug 9, 1994
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Hitachi Construction Machinery Co., Ltd.
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Kichio Nakajima
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G01 - MEASURING TESTING
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Control system for hydraulic circuit
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Patent number 4,718,329
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Issue date Jan 12, 1988
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Hitachi Construction Machinery Co., Ltd.
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Kichio Nakajima
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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Actuator
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Patent number 4,586,335
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Issue date May 6, 1986
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Hitachi, Ltd.
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Yuji Hosoda
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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Force sensing means
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Patent number 4,579,006
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Issue date Apr 1, 1986
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Hitachi, Ltd.
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Yuji Hosoda
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F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...
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Picture processing apparatus
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Patent number 4,549,208
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Issue date Oct 22, 1985
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Hitachi, Ltd.
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Kohji Kamejima
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G06 - COMPUTING CALCULATING COUNTING
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