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Class 340: Communications: Electrical

Communications - the handling of information or intelligence, restricted to the conveying of said information or intelligence between geographically spaced points. Information or intelligence is defined as being, matter which is handled by signaling systems or signaling devices (such as telegraph systems) or by that portion of nonsignaling systems or nonsignaling devices (such as power supply systems) which is designated in the arts as having a control function (such as the supervisory circuits which control the circuit breakers of an electric power network). Handling, as used above, is defined as being the active coaction between the tangible communication system or device and the intangible information or intelligence, and such coaction may assume various forms, such as transmission, storage, exhibiting, etc.

Subclass 3.21: Time slot or packet
Subclass 3.3: Including storage or recording
Subclass 3.7: Including indicator

Class 315: Electric Lamp And Discharge Devices: Systems

Electric lamp and electric space discharge device systems: structural combinations with circuit elements; structural combinations with heating and/or cooling means; cathode-ray tubes; lamps and/or discharge devices as sole load devices; lamps; electric space discharge devices gas or vapor discharge devices; high vacuum-type discharge devices, and gas or vapor-type discharge devices claimed broadly; plural load device systems; art uses and combinations with art devices; testing electric lamps and discharge devices; and operating a lamp or a gas or vapor discharge device.

Subclass 315: Electrically controlled load device switch
Subclass 316: Keyboard or pattern controlled switch

Class 362: Illumination

Means and processes for casting visible radiant energy in at least one direction to render objects in that direction visible.

Subclass 268: Plural serial lens elements or components
Subclass 85: WITH CONTROL CONSOLE

Class 370: Multiplex Communications

This is the generic class for multiplexing or duplexing systems, methods, or apparatus.