ApplicationNo. 06/590565 filed on 03/16/1984
US Classes:52/106, JAIL-TYPE STRUCTURE49/171, Viewing, ventilating, or packet passage52/209Having a drain or vent
ExaminersPrimary: Friedman, Carl D.
Assistant: Smith, Creighton
Attorney, Agent or Firm
International ClassesE04H 3/08 (20060101)
E06B 7/00 (20060101)
E06B 7/30 (20060101)
AbstractA vandal-resistant security view port for use in prison cells and the like. The view port permits observation into a cell or room and is mounted on a frame which can be attached over an opening in a wall of the cell. The view port has a transparent pane and a grate and may be open or covered by a hinged door operable from the back side of the wall.
Field of SearchRetaining feature between frame and reveal