TREA

Sadaharu Ishihara

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  • Inuyama, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Method and apparatus for forming by punching
    • Patent number 4,787,282
    • Issue date Nov 29, 1988
    • The Warner & Swasey Company
    • Kenji Okachi
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...