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

Gregg Charles Vanderheiden

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Cartridge

Recording – communication – or information retrieval equipment – Computer – data processor equipment – Element or attachment
Design Patent

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Digital audio book cartridge and player with...

Dynamic magnetic information storage or retrieval – Record medium – In container
Reexamination Certificate

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Player

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

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Profile ID: LFUS-PAI-P-3170045

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