4. Education and demonstration
  5. Language
  6. Speech

Boris Fradin

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Audio frequency converter for audio-phonatory training

Education and demonstration – Language – Speech
Patent

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Audio frequency converter for audio-phonatory training

Education and demonstration – Language – Speech
Patent

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Audio-frequency converter apparatus, for treating subjects suffe

Education and demonstration – Language – Speech
Patent

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Audio-frequency converter apparatus, installation including said

Education and demonstration – Language – Speech
Patent

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Profile ID: LFUS-PAI-P-787903

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