G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
G09F13/00—Illuminated signs; Luminous advertising
G09F13/34—Illuminated signs; Luminous advertising with light sources co-operating with movable members, e.g. with shutters to cover or uncover the light source
Landscapes
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
Engineering & Computer Science
(AREA)
Theoretical Computer Science
(AREA)
Control Of Vending Devices And Auxiliary Devices For Vending Devices
(AREA)