TREA

Shun Hayakawa

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  • Tondabayashi, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Chain wear indicator
    • Patent number 6,178,824
    • Issue date Jan 30, 2001
    • Shimano Inc.
    • Shun Hayakawa
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...