(under subclass 155) Subject matter having a means to adjust the brightness of the artificial light from the illumination means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
, FOR 718, for a foreign art collection involving automatic exposure control including artificial illumination which is charge level or power supply responsive.
SEE OR SEARCH CLASS
315, Electric Lamp and Discharge Devices: Systems,
307+, for automatic current or voltage regulation.
