Patents by Inventor Roger F. Simpson

Roger F. Simpson 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).

  • Card holder extrusion
    Patent number: D319886
    Type: Grant
    Filed: October 17, 1988
    Date of Patent: September 10, 1991
    Assignee: Design Synergy Pty. Ltd.
    Inventors: Roger F. Simpson, Barry W. Crone