TREA

Franz Janssen

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  • Goch, DE
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Patents Grantslast 30 patents

  • Information Patent Grant

    Device for repairing underground sewers
    • Patent number 6,755,592
    • Issue date Jun 29, 2004
    • Franz Janssen
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

  • Information Patent Application

    Device for repairing underground sewers
    • Publication number 20020192032
    • Publication date Dec 19, 2002
    • Franz Janssen
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...