TREA

using a wireless connection

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Industry

  • CPC
  • H04R25/554
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Parent Industries

HELECTRICITY H04Electric communication H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS DEAF-AID SETS PUBLIC ADDRESS SYSTEMS H04R25/00Deaf-aid sets providing an auditory perception; Electric tinnitus maskers providing an auditory perception

Current Industry

H04R25/554using a wireless connection
Industries