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Ryuhei Koyama

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Patents Grantslast 30 patents

  • Information Patent Grant

    Reduction gear device
    • Patent number 8,435,149
    • Issue date May 7, 2013
    • Nabtesco Corporation
    • Ryuhei Koyama
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS

Patents Applicationslast 30 patents

  • Information Patent Application

    Reduction Gear Device
    • Publication number 20090036250
    • Publication date Feb 5, 2009
    • Ryuhei Koyama
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS