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

Thomas Balch

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Formed polyethylene terephthalate polarizing film for...

Plastic and nonmetallic article shaping or treating: processes – Optical article shaping or treating – Light polarizing article or holographic article
Reexamination Certificate

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Glare demonstrator

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

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Method for side-fill lens casting

Plastic and nonmetallic article shaping or treating: processes – Optical article shaping or treating – Composite or multiple layer
Reexamination Certificate

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Ophthalmic lenses utilizing polyethylene terephthalate...

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

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Ophthalmic lenses utilizing polyethylene terephthalate...

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

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Profile ID: LFUS-PAI-P-1897445

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