Patents by Inventor John G. Shimkus

John G. Shimkus 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: D463129
    Type: Grant
    Filed: August 21, 1996
    Date of Patent: September 24, 2002
    Assignee: John O. Butler Company
    Inventors: H. Allen Achepohl, Scott H. Koepsel, John G. Shimkus, Judith M. Yablong