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Kazuo Hara

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  • Akishima, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Apparatus for manufacturing spring unit
    • Patent number 5,172,736
    • Issue date Dec 22, 1992
    • France Bed Co., Ltd.
    • Noboru Sasaki
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...