Patents by Inventor John Thorson

John Thorson 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).

  • Segmented door opener
    Patent number: 4588221
    Abstract: The subject of this patent application is a door assembly (10) having a knob (38) which, during shipment, is segregated from the rest of the assembly (10) for ease in packaging and storage. The invention includes a unique locking element (62) for securing the knob (38) to the door closure panel (12) when the panel (12) is at a location at which it is to be installed.
    Type: Grant
    Filed: June 25, 1985
    Date of Patent: May 13, 1986
    Assignee: Ideal Security Hardware Corporation
    Inventors: Cardell E. Miller, Gene A. Tracy, George L. Engstrom, John Thorson