4. Radiant energy
  5. Photocells; circuits and apparatus
  6. With circuit for evaluating a web, strand, strip, or sheet

Igor Friedland

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Optical scanner

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

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Optical tracing system for measuring elevation of a reference bo

Radiant energy – Photocells; circuits and apparatus – With circuit for evaluating a web – strand – strip – or sheet
Patent

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Profile ID: LFUS-PAI-P-1473527

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