4. Optics: measuring and testing
  5. By shade or color
  6. With sequential comparison of sample and standard

Jan C. Torfs

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METHOD FOR CHARACTERIZING THE APPEARANCE OF A PARTICULAR...

Optics: measuring and testing – By shade or color – With sequential comparison of sample and standard
Reexamination Certificate

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Method for designing a plastic article having a desired...

Optics: measuring and testing – By shade or color
Reexamination Certificate

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