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

Paul Craddock

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Apparatus for counting can ends or the like

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

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Can end sensor, separation and handling apparatus

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

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Electrically conductive non-aqueous wellbore fluids

Earth boring – well treating – and oil field chemistry – Earth boring – Contains inorganic component other than water or clay
Reexamination Certificate

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Profile ID: LFUS-PAI-P-153661

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