Patents by Inventor John G. Heerlien

John G. Heerlien 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: D253420
    Type: Grant
    Filed: July 8, 1977
    Date of Patent: November 13, 1979
    Assignee: Unitec Corporation
    Inventor: John G. Heerlien