4. Optics: eye examining, vision testing and correcting
  5. Spectacles and eyeglasses
  6. With rear-view reflectors
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Device for rear view vision for spectacles

Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – With rear-view reflectors
Patent

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Diver's mask with fixed mirrorized surfaces

Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – With rear-view reflectors
Patent

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Diver's mask with rotatable mirrorized elements

Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – With rear-view reflectors
Patent

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