Der-Chyen Wang

Person

  • Hou-Li, CN

Patents Grantslast 30 patents

  • Information Patent Grant

    Dot matrix print head

    • Patent number 4,669,898
    • Issue date Jun 2, 1987
    • Electronics Research and Service Organization
    • Der-Zong Yeh
    • B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS