4. Electrical audio signal processing systems and devices
  5. Electro-acoustic audio transducer
  6. Having acoustic wave modifying structure

Michael L. Jacobson

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Jug-shaped loudspeaker

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

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Tuned elastic loudspeaker enclosure

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Having acoustic wave modifying structure
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2482852

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