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

Jan Harrsen

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Method and device for optically counting small particles

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

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Method of and device for acoustically counting particles

Electrical pulse counters – pulse dividers – or shift registers: c – Applications – Counting animate or inanimate entities
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Profile ID: LFUS-PAI-P-939629

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