4. Optics: measuring and testing
  5. Inspection of flaws or impurities
  6. Having predetermined light transmission regions

Keith Loder Lewis

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Anti counterfeit apparatus

Optics: measuring and testing – Inspection of flaws or impurities – Having predetermined light transmission regions
Patent

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Optical filters

Optical: systems and elements – Light interference – Produced by coating or lamina
Reexamination Certificate

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Optical modulator

Optical: systems and elements – Optical modulator – Light wave temporal modulation
Reexamination Certificate

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Protective coatings for optical components

Stock material or miscellaneous articles – Composite – Of inorganic material
Patent

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Profile ID: LFUS-PAI-P-1628758

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