TREA

Aspects relating to vents

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  • CPC
  • H04R2460/11
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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 H04R2460/00Details of hearing devices

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H04R2460/11Aspects relating to vents
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