TREA

Metal Technic Research Laboratory

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Surface-hardened chain link
    • Patent number 5,997,662
    • Issue date Dec 7, 1999
    • Metal Technic Research Laboratory
    • Kanetake Norio
    • C21 - METALLURGY OF IRON