TREA

Do Yean Lee

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  • Seoul, KR
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Patents Grantslast 30 patents

  • Information Patent Grant

    Nonferrous metal pipe coupling structure
    • Patent number 6,450,551
    • Issue date Sep 17, 2002
    • Do Yean Lee
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Pipe coupler
    • Patent number 6,092,844
    • Issue date Jul 25, 2000
    • Do Yean Lee
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

  • Information Patent Application

    Anti-Expansion and Anti-Seismic Pipe Fitting
    • Publication number 20120091707
    • Publication date Apr 19, 2012
    • Do Youn Lee
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...