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

Donald N. Williams

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Read-only optical memory system

Communications: electrical – Digital comparator systems
Patent

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System for locating breaks in fiber optic filaments

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

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Tunable spectral source

Optical: systems and elements – Light dispersion
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1447669

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