TREA

Mingquan Cai

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  • Shandong Province, CN
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Patents Grantslast 30 patents

  • Information Patent Grant

    Locking drill chuck
    • Patent number 7,249,770
    • Issue date Jul 31, 2007
    • Shandong Weida Machinery Co., Ltd.
    • Guimo Yang
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Manual tightened chuck
    • Patent number 6,247,705
    • Issue date Jun 19, 2001
    • Shandong Weida Machine Tool Tools Group Corporation
    • Guimo Yang
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR

Patents Applicationslast 30 patents

  • Information Patent Application

    Locking drill chuck
    • Publication number 20050023776
    • Publication date Feb 3, 2005
    • Guimo Yang
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR