TREA

Public address systems

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Industry

  • CPC
  • H04R27/00
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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

Current Industry

H04R27/00Public address systems

Sub Industries

H04R27/02Amplifying systems for the deaf H04R27/04Electric megaphones
Industries