一種口罩

Research output: Patents, Agreements, AssignmentsPatents (LU)

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  • 2021

    一種口罩

    Translated title of the contribution: A MaskKO, W. Y. A. (Inventor), 28 May 2021, Patent Registry, Intellectual Property Department (HKSAR), Patent No. HK30036740, 22 Jan 2021, Priority date 22 Jan 2021

    Research output: Patents, Agreements, AssignmentsPatents (LU)