4. Music
  5. Instruments
  6. Rigid vibrators

Marc Charbonneaux

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Audio device and method including a membrane having at least...

Music – Instruments – Rigid vibrators
Reexamination Certificate

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Harmonic amplifier and corresponding electro-acoustic...

Electrical audio signal processing systems and devices – Circuitry combined with specific type microphone or loudspeaker – With magnetic loudspeaker
Reexamination Certificate

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Perforated open volume acoustic resonator

Music – Instruments – Rigid vibrators
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2610908

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