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Tsuchiura, JP
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last 30 patents
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Patent Grant
Slide table
Patent number
4,995,711
Issue date
Feb 26, 1991
Hitachi, Ltd.
Kuninori Imai
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Patent Grant
Ultrasonic signal amplifier circuit and system of gain control thereof
Patent number
4,904,954
Issue date
Feb 27, 1990
Hitachi Construction Machinery Co., Ltd.
Kan Otake
G01 - MEASURING TESTING