Patents by Inventor John Roy North

John Roy North 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).

  • Mechanical drop-away ceiling
    Patent number: 9103117
    Abstract: A mechanical drop-away ceiling may include a frame and a panel. The frame may be configured to be suspended above a floor. The frame may include a movable element movable between a closed position and an open position. The panel may be selectively retained at the frame by the movable element in the closed position and may be free to drop away from the frame when the movable element is in the open position.
    Type: Grant
    Filed: February 28, 2014
    Date of Patent: August 11, 2015
    Assignee: WINDCHILL ENGINEERING, INC.
    Inventors: David Alan Lundskog, John Roy North, Lane Mack Lewis, Jr.