4. Optics: measuring and testing
  5. Plural test

David L. Hofeldt

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LED modifying apparatus and method

Radiant energy – Radiant energy generation and sources – With radiation modifying member
Reexamination Certificate

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LED modifying apparatus and method

Radiant energy – Radiant energy generation and sources – With radiation modifying member
Reexamination Certificate

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Optical property sensor

Optics: measuring and testing – Plural test
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Web inspection calibration system and related methods

Optics: measuring and testing – By monitoring of webs or thread
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