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Balanced progressive lens

G - Physics – 02 – C
Patent

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Ball mounted self-adjusting eyeglasses

G - Physics – 02 – C
Patent

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Base and auxiliary eyeglass system using magnets

G - Physics – 02 – C
Patent

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Behind-ear hearing aid

G - Physics – 02 – C
Patent

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Bezel closure device particularly for eyeglasses frames

G - Physics – 02 – C
Patent

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Bi-focal corneal lens and method of making the same

G - Physics – 02 – C
Patent

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Bi-focal lens

G - Physics – 02 – C
Patent

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Biasing ring for spectacles

G - Physics – 02 – C
Patent

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Bifocal contact lens

G - Physics – 02 – C
Patent

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Bifocal contact lens with secondary prism

G - Physics – 02 – C
Patent

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Bifocal corneal contact lens

G - Physics – 02 – C
Patent

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Bifocal corneal contact lens

G - Physics – 02 – C
Patent

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Bifocal eyeglass reading lens lift

G - Physics – 02 – C
Patent

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Bifocal lens

G - Physics – 02 – C
Patent

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Bifocal lens

G - Physics – 02 – C
Patent

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Bifocal lens

G - Physics – 02 – C
Patent

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Bifocal lens

G - Physics – 02 – C
Patent

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Bifocal lens

G - Physics – 02 – C
Patent

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Bifocal lens

G - Physics – 02 – C
Patent

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Bifocal lens

G - Physics – 02 – C
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