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Yanhua Jia

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Patents Grantslast 30 patents

  • Information Patent Grant

    Elevator car brake
    • Patent number 8,256,579
    • Issue date Sep 4, 2012
    • Yanhua Jia
    • B66 - HOISTING LIFTING HAULING

Patents Applicationslast 30 patents

  • Information Patent Application

    ELEVATOR CAR BRAKE
    • Publication number 20110147133
    • Publication date Jun 23, 2011
    • Yanhua Jia
    • B66 - HOISTING LIFTING HAULING