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

Thomas J. de Groot

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Acoustic transducer

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

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Acoustic transducer

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

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Pressure-sensitive switch, its method of calibration and use...

Acoustics – Geophysical or subsurface exploration – Seismic source and detector
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1293500

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