(under the class definition) Subject matter for delivering the output of an audio signal source to a remote location, or to a plurality of electric-signal-to-sound transducers.
SEE OR SEARCH CLASS
340, Communications: Electrical,
825.26+, for stock quotation systems.
348, Television,
6+, for wired television broadcasting and distribution system.
370, Multiplex Communications,
486+, for multiplex program distribution systems. 455, Telecommunications,
