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Hirohiko Yoshida
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Hoya, JP
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last 30 patents
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Patent Grant
Multicolor picture display device
Patent number
4,686,519
Issue date
Aug 11, 1987
Citizen Watch Co. Ltd.
Hirohiko Yoshida
G02 - OPTICS
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Patent Grant
Capacitor switching circuits for adjusting crystal oscillator frequ...
Patent number
4,179,671
Issue date
Dec 18, 1979
Citizen Watch Company Limited
Hirohiko Yoshida
H03 - BASIC ELECTRONIC CIRCUITRY