David M. DeWitt

Person

  • Fond du Lac, WI, US

Patents Grantslast 30 patents

  • Information Patent Grant

    Marine propeller

    • Patent number 7,637,722
    • Issue date Dec 29, 2009
    • Brunswick Corporation
    • Roger E. Koepsel
    • B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT