4. Optics: eye examining, vision testing and correcting
  5. Spectacles and eyeglasses
  6. Ophthalmic lenses or blanks

David M. Hasenauer

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Aspheric plano eyewear

Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Ophthalmic lenses or blanks
Patent

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Aspheric plano eyewear

Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Ophthalmic lenses or blanks
Patent

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Compact digital camera objective with interdigitated element ali

Optical: systems and elements – Single channel simultaneously to or from plural channels – By partial reflection at beam splitting or combining surface
Patent

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Parabolic and hyperbolic aspheric eyewear

Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Ophthalmic lenses or blanks
Reexamination Certificate

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Zoom lens system

Optical: systems and elements – Lens – With variable magnification
Patent

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Profile ID: LFUS-PAI-P-439394

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