4. Optical: systems and elements
  5. Lens
  6. Fluid

Lawrence D. Quaglia

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Automatic fast focusing infinitely variable focal power lens uni

Optical: systems and elements – Lens – Fluid
Patent

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Self-adjusting O-ring seal product to retain internal bearing lu

Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent

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Vari-lens phoropter and automatic fast focusing infinitely varia

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

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Profile ID: LFUS-PAI-P-863652

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