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Susumu Itoh
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Hitachi, JP
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last 30 patents
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Patent Grant
Electromagnetic-acoustic measuring apparatus
Patent number
4,450,725
Issue date
May 29, 1984
Hitachi, Ltd.
Hisao Yamaguchi
G01 - MEASURING TESTING
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Patent Grant
Electromagnetic ultrasonic apparatus
Patent number
4,348,903
Issue date
Sep 14, 1982
Nippon Steel Corporation
Ichiya Sato
G10 - MUSICAL INSTRUMENTS ACOUSTICS