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

Robert D. Mantell

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Implement for activating and deactivating a telephone hook switc

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

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Implement for activating and deactivating a telephone hook switc

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

  [ 0.00 ] – not rated yet Voters 0   Comments 0

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Profile ID: LFUS-PAI-P-1870577

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