4. Chairs and seats
  5. Combined
  6. With electrical feature

Drew Daniels

Inventor

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Center point stereo field expander for amplified musical...

Electrical audio signal processing systems and devices – Binaural and stereophonic – Stereo speaker arrangement
Reexamination Certificate

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Seat having sound system with acoustic waveguide

Chairs and seats – Combined – With electrical feature
Patent

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Speaker motor case

Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Element or attachment
Patent

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Voice coil excursion and amplitude gain control device

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Having electrostatic element
Patent

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Profile ID: LFUS-PAI-P-1268323

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