4. Recording, communication, or information retrieval equipment
  5. Computer, data processor equipment

James J. Wellwood

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Phonograph cartridge and stylus assembly

Recording – communication – or information retrieval equipment – Computer – data processor equipment
Patent

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Stabilizing and static removing attachment for phonograph pickup

Dynamic information storage or retrieval – With storage medium cleaning or electrostatic chanrge... – By tone arm attachment
Patent

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Profile ID: LFUS-PAI-P-538992

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