4. Optics: eye examining, vision testing and correcting
  5. Spectacles and eyeglasses
  6. Folding

Rato R. Buhler

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Convergence mechanism for binocular refracting instrument

Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Folding
Patent

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Lens chucking apparatus

Abrasive tool making process – material – or composition – Impregnating or coating an abrasive tool
Patent

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Method of fitting ophthalmic lenses in spectacles frames

Abrasive tool making process – material – or composition – Impregnating or coating an abrasive tool
Patent

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Profile ID: LFUS-PAI-P-482295

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