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Yoshihiro Hase

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  • Yokohama, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Building panel obtained by riveting method
    • Patent number 6,138,419
    • Issue date Oct 31, 2000
    • Mitsubishi Chemical Corporation
    • Takamasa Sekiguchi
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...