4. Optics: eye examining, vision testing and correcting
  5. Spectacles and eyeglasses
  6. Connectors

Masunaga Optical Mfg. Co., Ltd.

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Adjustable temple frame mounting structure in spectacles

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

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Assembly of clip-on attachment spectacles

Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – With antiglare or shading
Reexamination Certificate

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Hinge structure and bearing member for hinge in frame of spectac

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

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Method for bending difficult-to-work metallic wire and method fo

Metal deforming – By deflecting successively-presented portions of work during... – With modification or control of temperature or work – tool or...
Patent

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Method for working an auxiliary spectacle lens

Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – With antiglare or shading
Reexamination Certificate

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