4. Optics: eye examining, vision testing and correcting
  5. Eye examining or testing instrument
  6. Eye exercising or training type

Duncan J. Anderson

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Achromatic apparatus for producing a wavelength-independent...

Liquid crystal cells – elements and systems – Liquid crystal system – Projector including liquid crystal cell
Reexamination Certificate

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Brightness enhancement of LED using selective ray angular...

Illumination – Light modifier – Refractor
Reexamination Certificate

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Efficient coupling of light into a light guides

Optical waveguides – With optical coupler – Particular coupling structure
Reexamination Certificate

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Efficient coupling of light into a light guides

Optical waveguides – With optical coupler – Particular coupling structure
Reexamination Certificate

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High brightness illumination device with incoherent solid...

Illumination – Plural light sources – With modifier
Reexamination Certificate

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Profile ID: LFUS-PAI-P-463827

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