4. Electricity: measuring and testing
  5. Measuring, testing, or sensing electricity, per se
  6. Frequency of cyclic current or voltage

Paul G. Koehler

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Coaxial cable having effective insulated conductor rotation

Electricity: conductors and insulators – With fluids or vacuum – Conduits – cables and conductors
Reexamination Certificate

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Methods of and apparatus for detecting, measuring, and classifyi

Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage
Patent

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Profile ID: LFUS-PAI-P-1806992

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