4. Optics: eye examining, vision testing and correcting
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  6. Connectors
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Clamp type screw loosening prevention mechanism for glasses

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

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Clamping device for spectacle lenses

Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Connectors
Reexamination Certificate

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Collapsible spectacles

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

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Connecting structure of endpiece and temple

Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Connectors
Reexamination Certificate

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Connection assembly for frameless eyeglasses

Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Connectors
Reexamination Certificate

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Connection structure of ear upholders for eyeglasses

Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Connectors
Reexamination Certificate

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Coupling system for assembling a spectacle frame and the side-pi

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

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Coupling system for securing a one-piece lens to temples

Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Connectors
Reexamination Certificate

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