TREA

Hyoun-Gyu Lim

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  • Seoul, KR
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Patents Grantslast 30 patents

  • Information Patent Grant

    Ellipsograph
    • Patent number 6,308,426
    • Issue date Oct 30, 2001
    • Hyoun-Gyu Lim
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES