Patents by Inventor Keith A. Dinwiddie

Keith A. Dinwiddie has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: D578177
    Type: Grant
    Filed: January 12, 2006
    Date of Patent: October 7, 2008
    Assignee: Rocksolid Industries, LLC
    Inventors: Kenneth M. Norberg, Keith A. Dinwiddie
  • Patent number: D579511
    Type: Grant
    Filed: February 2, 2006
    Date of Patent: October 28, 2008
    Assignee: Rocksolid Industries LLC
    Inventors: Kenneth M. Norberg, Keith A. Dinwiddie
  • Patent number: D670352
    Type: Grant
    Filed: September 8, 2011
    Date of Patent: November 6, 2012
    Assignee: Rocksolid Industries LLC
    Inventors: Kenneth M. Norberg, Keith A. Dinwiddie