4. Electric heating
  5. Metal heating
  6. By arc

Masayuki Okubo

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Arc welding apparatus

Electric heating – Metal heating – By arc
Patent

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Arc welding apparatus for constant current and voltage character

Electric heating – Metal heating – By arc
Patent

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Brushless motor

Electrical generator or motor structure – Dynamoelectric – Rotary
Reexamination Certificate

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Brushless motor

Electrical generator or motor structure – Dynamoelectric – Rotary
Reexamination Certificate

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Brushless motor control method and brushless motor

Electricity: motive power systems – Synchronous motor systems – Brushless motor closed-loop control
Reexamination Certificate

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Profile ID: LFUS-PAI-P-325576

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