4. Electrical generator or motor structure
  5. Non-dynamoelectric
  6. Piezoelectric elements and devices

Tamotsu Kurosawa

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Method of manufacturing thin quartz crystal wafer

Metal working – Method of mechanical manufacture – Electrical device making
Reexamination Certificate

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Tuning fork type crystal unit and bar type crystal unit

Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2872771

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