4. Optics: eye examining, vision testing and correcting
  5. Eye examining or testing instrument
  6. Subjective type

Edwin A. Hazard

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Compact refraction instrument

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

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Concentric drums target support system for ophthalmic instrument

Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Subjective type
Patent

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Oblique viewing system for microscopes

Optical: systems and elements – Compound lens system – Microscope
Patent

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Opthalmometer

Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Objective type
Patent

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Profile ID: LFUS-PAI-P-710290

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