Patents by Inventor John E. Walrath

John E. Walrath 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).

  • Sign holder with locating means for permanent graphics panel
    Patent number: 5134794
    Abstract: A sign holder including a permanent graphics panel held in a frame formed of two molded plastic frame-halves joined together and which include elements that locate the permanent graphics panel relative to the frame.
    Type: Grant
    Filed: January 31, 1991
    Date of Patent: August 4, 1992
    Assignee: Process Displays, Inc.
    Inventor: John E. Walrath