4. Electrical generator or motor structure
  5. Educational or construction units or kits

James D. Kerr

Inventor

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Piezoelectric force-balance accelerometer system

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

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Piezoelectric seismometer

Communications – electrical: acoustic wave systems and devices – Signal transducers – Underwater type
Patent

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Piezoelectric stress/strain intrusion detectors

Electrical generator or motor structure – Educational or construction units or kits
Patent

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Seismic strong-motion recorder

Boots – shoes – and leggings
Patent

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Profile ID: LFUS-PAI-P-654867

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