4. Electricity: motive power systems
  5. Open-loop stepping motor control systems

Roberto Zafferri

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Electro-acoustic device for alarm watch

Horology: time measuring systems or devices – Signalling means – Time condition responsive
Patent

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Electromagnetic motor rotatable in either direction

Electricity: motive power systems – Open-loop stepping motor control systems
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Electromagnetic motor rotatable in either direction

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

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Electronic watch

Electrical generator or motor structure – Dynamoelectric – Rotary
Patent

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Epicycloidal step motor

Horology: time measuring systems or devices – Chronological – With mechanical or electromechanical driven display
Patent

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Profile ID: LFUS-PAI-P-363753

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