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

Henry A. Greene

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Low vision enhancing optical system with movable mirrors

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

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Method and apparatus for measuring range by use of multiple rang

Optics: measuring and testing – Range or remote distance finding – With photodetection
Patent

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Vision enhancing assembly

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

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Vision enhancing optical system

Optical: systems and elements – Compound lens system – Telescope
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1171132

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