Patents by Inventor Terry J. Hedrick

Terry J. Hedrick 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).

  • Electromechanical evacuation exit indicating flag
    Patent number: 4808977
    Abstract: An apparatus for indicating an emergency exit in case of fire in a building, includes a smoke alarm apparatus adapted to relay an electrical activating signal causing a luminous exit indicating flag to be projected outwardly from a wall adjacent an emergency exit and near the floor, for indicating exit locations to persons evacuating a smoke filled building.
    Type: Grant
    Filed: August 20, 1987
    Date of Patent: February 28, 1989
    Inventor: Terry J. Hedrick