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Weidong Zhang

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  • Tengzhou City, CN
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Patents Grantslast 30 patents

  • Information Patent Grant

    Stepless speed change bench drill
    • Patent number 6,779,952
    • Issue date Aug 24, 2004
    • Weidong Zhang
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR

Patents Applicationslast 30 patents

  • Information Patent Application

    Stepless speed change bench drill
    • Publication number 20030053871
    • Publication date Mar 20, 2003
    • Weidong Zhang
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...