4. Optics: measuring and testing
  5. Document pattern analysis or verification

James David Ralph Buchanan

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Optical authentication

Optics: measuring and testing – Document pattern analysis or verification
Reexamination Certificate

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Verification of authenticity

Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Particular communication authentication technique
Reexamination Certificate

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Profile ID: LFUS-PAI-P-3270043

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