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

Siegfried Gelius

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Optical lens vertex measuring projector

Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Food preparation type
Patent

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Perimetric eye testing device

Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Folding
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Process and apparatus for the dynamic or static perimetry of the

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

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Profile ID: LFUS-PAI-P-824520

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