4. Recording, communication, or information retrieval equipment
  5. Video or audio transmission, recording or playback equipment
  6. Element or attachment

Raymond K. Weikel

Inventor

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Details

Inventor

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Dual-chamber loudspeaker

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

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Headphones

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

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Headset

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

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Headset

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

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Headset

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

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Profile ID: LFUS-PAI-P-1801006

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