Patents by Inventor David E. Layton

David E. Layton 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).

  • Conduit trunking for protecting cables
    Patent number: D293098
    Type: Grant
    Filed: June 12, 1984
    Date of Patent: December 8, 1987
    Assignee: EGA Limited
    Inventor: David E. Layton
  • Electrical trunking, utility box
    Patent number: D310824
    Type: Grant
    Filed: August 1, 1988
    Date of Patent: September 25, 1990
    Assignee: EGA Limited
    Inventor: David E. Layton