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

Ludwig Richter

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Closed loop control circuitry for step motors

Electricity: motive power systems – Open-loop stepping motor control systems
Patent

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Telephone instrument

Telephonic communications – Terminal – Having loudspeaking conversation capability
Patent

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Telephone set

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

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Telephone set

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

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Telephone set

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-824130

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