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Wataru Hayakawa
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Odawara, JP
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last 30 patents
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Patent Grant
Device for optically detecting the presence or absence of an object...
Patent number
4,808,809
Issue date
Feb 28, 1989
Hitachi, Ltd.
Wataru Hayakawa
G01 - MEASURING TESTING
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Patent Grant
Air bearing head support
Patent number
4,120,010
Issue date
Oct 10, 1978
Nippon Telegraph and Telephone Public Corp.
Yasunaga Mitsuya
G11 - INFORMATION STORAGE