Yasuhiko Ogawa

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Takenezawa-machi, Shioya-gun, Tochigi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Comb-shaped piezoelectric drive device
- Patent number 4,633,121
- Issue date Dec 30, 1986
- NGK Spark Plug Co., Ltd.
- Yasuhiko Ogawa
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS