4. Acoustics
  5. Sound-modifying means
  6. Intensifying horn

François Deffarges

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Loud speaker

Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Speaker or housing therefor
Design Patent

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Sound-producing device with acoustic waveguide

Acoustics – Sound-modifying means – Intensifying horn
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2573276

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