4. Radiant energy
  5. Photocells; circuits and apparatus
  6. Optical or pre-photocell system

Frank A. Nemeth

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Combined liquid-level and conductivity sensor

Measuring and testing – Liquid level or depth gauge – With other measuring device
Patent

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Combined optical waveguide and prismatic liquid-level sensor

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

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Multi-level fiber-optic liquid-level sensing system

Radiant energy – Ionic separation or analysis – Static field-type ion path-bending selecting means
Patent

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Profile ID: LFUS-PAI-P-1047529

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