4. Electricity: measuring and testing
  5. Measuring, testing, or sensing electricity, per se
  6. Using radiant energy

Charles H. Grove

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Lightning current waveform measuring system

Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Using radiant energy
Patent

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Optical shutter switching matrix

Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent

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Profile ID: LFUS-PAI-P-459095

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