(under the class definition) Subject matter including two or more motion picture cameras or projectors or one or more motion picture cameras and one or more motion picture projectors which cooperate one with the other to produce a single motion picture sequence or presentation.
(1) Note. The motion picture devices may operate either sequentially or simultaneously to produce a single sequence.
SEE OR SEARCH THIS CLASS, SUBCLASS:
7, for sound accompanied motion picture devices which are sequentially operated.
136+, for convertible motion picture equipment.
201, for plural projectors one of which projects a picture sequence and the other illuminates the screen during the change cycle of the picture projector.
SEE OR SEARCH CLASS 307, Electrical Transmission or Interconnection Systems,
112+, for switching systems to control the transmission of electrical power to plural projectors.
318, Electricity: Motive Power Systems,
102, for the sequential control of electric projection motors.
