4. Optics: eye examining, vision testing and correcting
  5. Spectacles and eyeglasses
  6. Ophthalmic lenses or blanks

Opthonix, Inc.

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Eyeglass manufacturing method using variable index layer

Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Ophthalmic lenses or blanks
Reexamination Certificate

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Materials and methods for producing lenses

Optical: systems and elements – Lens – With graded refractive index
Reexamination Certificate

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Ophthalmic diagnostic instrument

Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Objective type
Reexamination Certificate

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