4. Optics: measuring and testing
  5. By monitoring of webs or thread
  6. For flaws or imperfections

Graham M. Clarke

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Correction for scan period variation in optical image scanners

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

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Discrimination circuit arrangements

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

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Inspection apparatus

Optics: measuring and testing – By monitoring of webs or thread – For flaws or imperfections
Patent

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Optical article and method of making

Illumination – Light modifier
Reexamination Certificate

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Privacy film

Optical: systems and elements – Glare or unwanted light reduction
Reexamination Certificate

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Profile ID: LFUS-PAI-P-47761

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