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IPC Subgroup
H04R 1/44

Special adaptations for subaqueous use, e.g. for hydrophone

Introduced: September 1968

Last revised: January 2006

Full Title

Details of transducers > Special adaptations for subaqueous use, e.g. for hydrophone

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