Kenichi Yoshikawa

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Small-sized electronic instrument
- Patent number 5,235,564
- Issue date Aug 10, 1993
- Citizen Watch Co., Ltd.
- Masami Fukuda
- G04 - HOROLOGY
Information Patent Grant
Solid state watch module construction
- Patent number 4,232,512
- Issue date Nov 11, 1980
- Citizen Watch Co., Ltd.
- Kenichi Yoshikawa
- G04 - HOROLOGY