comprising two or more styli or transducers

Full Title

Transducers of moving-armature or moving-core type > Gramophone pick-ups using a stylus; Recorders using a stylus > comprising two or more styli or transducers

Classification Context

Section:

ELECTRICITY

Class:

ELECTRIC COMMUNICATION TECHNIQUE

Subclass:

LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS