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Shigeo Aoki
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Katsuta, JP
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last 30 patents
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Patent Grant
Ferromagnetic material and a magnetic head using the same material
Patent number
4,762,755
Issue date
Aug 9, 1988
Hitachi, Ltd.
Kazuo Shiiki
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...