TREA

using frequency variation or different frequencies

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Industry

  • CPC
  • G10K11/343
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Parent Industries

GPHYSICS G10Musical instruments G10KSOUND-PRODUCING DEVICES ACOUSTICS NOT OTHERWISE PROVIDED FOR G10K11/00Methods or devices for transmitting, conducting or directing sound in general Methods or devices for protecting against, or for damping, noise or other acoustic waves in general

Current Industry

G10K11/343using frequency variation or different frequencies
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