(under subclass 428) Subject matter including apparatus for frictional abutting engagement between the user's body and a telephone terminal receiver-transmitter device.
(1) Note. These instruments include structure to support both a receiver and a transmitter casing adjacent a user's head by engagement therewith.
SEE OR SEARCH THIS CLASS, SUBCLASS:
449, for handset holders that are attachable to terminal housing.
SEE OR SEARCH CLASS
381, Electrical Audio Signal Processing Systems and Devices,
321+, for a stereo headphone, subclass 74 for a headphone circuit, and subclasses 370+ and 385 for a headphone.
