4. Optics: eye examining, vision testing and correcting
  5. Spectacles and eyeglasses
  6. With vertical adjustment of multifocal lenses

David R. Engelhardt

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Adjustable spectacle frame

Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – With vertical adjustment of multifocal lenses
Patent

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Color process for spectacle frame coated with polyester

Bleaching and dyeing; fluid treatment and chemical modification – Coating or sizing with dyeing process or product
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Spectacle frame

Photography and optical equipment – Ophthalmic article
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Profile ID: LFUS-PAI-P-843208

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