Guanzheng LI

Person

  • Beijing, CN

Patents Grantslast 30 patents

  • Information Patent Grant

    Photomask and exposure method

    • Patent number 10,969,676
    • Issue date Apr 6, 2021
    • BOE Technology Group Co., Ltd.
    • Chengyong He
    • H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents