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

Erwin Koppel

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Eye testing device for prescribing eyeglasses

Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Folding
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Printing and office machinery – Type or type face
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Font of alphanumeric characters

Printing and office machinery – Type or type face
Patent

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Profile ID: LFUS-PAI-P-1029187

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