4. Electrical audio signal processing systems and devices
  5. Having non-electrical feature
  6. And loudspeaker

Allan Amsel

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Combined headphone set and portable speaker assembly

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Plural or compound reproducers
Reexamination Certificate

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Foldable speakers

Electrical audio signal processing systems and devices – Having non-electrical feature – And loudspeaker
Reexamination Certificate

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Illuminated flat panel speakers

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

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Profile ID: LFUS-PAI-P-2886311

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