The specification discloses a movable room divider panel system in which the divider panels include raceways with removable covers and fixed electrical outlet boxes which are proportional in length from end to end to the width of their respective panels from edge to edge. Outlet boxes in adjacent panels...http://www.google.fr/patents/US4135775?utm_source=gb-gplus-shareBrevet US4135775 - Movable divider panels with electrical wiring
