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Derrik Cheng

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  • Suzhou, CN
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Patents Grantslast 30 patents

  • Information Patent Grant

    Indicating charge status
    • Patent number 10,897,150
    • Issue date Jan 19, 2021
    • Hand Held Products, Inc.
    • Jiaqi Liu
    • G06 - COMPUTING CALCULATING COUNTING

Patents Applicationslast 30 patents

  • Information Patent Application

    INDICATING CHARGE STATUS
    • Publication number 20190222044
    • Publication date Jul 18, 2019
    • HAND HELD PRODUCTS, INC.
    • Jiaqi Liu
    • G06 - COMPUTING CALCULATING COUNTING