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Tieyan Zhang

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  • Hangzhou, CN
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Patents Grantslast 30 patents

  • Information Patent Grant

    Drill bit
    • Patent number 10,315,336
    • Issue date Jun 11, 2019
    • Bosch Power Tools (China) Co., LTD.
    • Long Zhou
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR

Patents Applicationslast 30 patents

  • Information Patent Application

    Drill Bit
    • Publication number 20170157799
    • Publication date Jun 8, 2017
    • Bosch Power Tools (China) Co. Ltd.
    • Long Zhou
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS