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

Brain Power Incorporated

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Device for heating dyes to tint optical lenses and filters

Electric heating – Heating devices – Combined with container – enclosure – or support for material...
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Method of using a tablet for introducing tint, UV absorbers...

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

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