TREA

for diaphragms or their outer suspension

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Industry

  • CPC
  • H04R31/003
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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 H04R31/00Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor

Current Industry

H04R31/003for diaphragms or their outer suspension
Industries