175969 ⎘
Devices for changing pictures in viewing apparatus or projectors in which pictures are attached to a movable carrier
Sub-classes:TRAFFIC CONTROL PROJECTOR
#2DECORATIVE PROJECTION LIGHT ASSEMBLIES, SYSTEMS, AND METHODS
#3Light-unit(s) of LED or-and laser light-string's has more one sections has different light performance(s)
#4Image projection device
#5Indoor-outdoor projector
#6Projection system
#7Lens cover set
#8Backlight device and liquid crystal display device therewith
#9Rotary image projector