TREA

in which the sound-producing member is rotated manually or by a motor

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Industry

  • CPC
  • G10K7/02
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Parent Industries

GPHYSICS G10Musical instruments G10KSOUND-PRODUCING DEVICES ACOUSTICS NOT OTHERWISE PROVIDED FOR G10K7/00Sirens

Current Industry

G10K7/02in which the sound-producing member is rotated manually or by a motor
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