Patents by Inventor John W. Ropeter

John W. Ropeter 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: D318377
    Type: Grant
    Filed: May 23, 1989
    Date of Patent: July 23, 1991
    Inventor: John W. Ropeter