Electrical control therefor

Full Title

Indicating arrangements for variable information in which the complete information is permanently attached to a movable support which brings it to the display position (showcases or showcabinets with arrangements for continuously or intermittently moving the merchandise A47F3/08; using static means to present variable information G09F9/00) > the display elements being secured to rotating members, e.g. drums, spindles > Electrical control therefor