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Frederick A. Ketterhagen

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  • Burlington, WI, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Concrete cutter
    • Patent number 7,451,757
    • Issue date Nov 18, 2008
    • Frederick A. Ketterhagen
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    Riding saw for cutting concrete and similar materials
    • Patent number 5,724,956
    • Issue date Mar 10, 1998
    • Diamond Products Joint Venture
    • Frederick A. Ketterhagen
    • B28 - WORKING CEMENT, CLAY, OR STONE

Patents Applicationslast 30 patents

  • Information Patent Application

    CONCRETE CUTTER
    • Publication number 20070209651
    • Publication date Sep 13, 2007
    • Frederick A. Ketterhagen
    • B28 - WORKING CEMENT, CLAY, OR STONE