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Ogawa; Yasuhiko

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  • Tochigi, JP
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  • 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

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