Test tool for optometry

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

Reexamination Certificate

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Reexamination Certificate

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07118219

ABSTRACT:
An test tool for optometry includes a lens holding frame and a clip. The lens holding frame pivotally supports a trial lens to be mounted. The clip is attached to a rear side of the lens holding frame to clamp glasses. The lens holding frame has a pair of axi-symmetrical C-shaped rims having open ends and opposing closed ends, and a connecting portion that connects the opposing closed ends of the rims. Each rim has an inner surface that forms an accommodating space for holding the trial lens to be pivotal and movable in a left-to-right direction.

REFERENCES:
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patent: 1258417 (1918-03-01), Kellner
patent: 2147448 (1939-02-01), Lee
patent: 2147488 (1939-02-01), Hickman et al.
patent: 4220402 (1980-09-01), Jannelli
patent: 4236793 (1980-12-01), Whitney et al.
patent: 5499063 (1996-03-01), Butler et al.
patent: 5880805 (1999-03-01), Naessens et al.
patent: 6132045 (2000-10-01), Gauvreau
patent: 6270219 (2001-08-01), Saito
patent: 6325506 (2001-12-01), Cooper
patent: 05-46725 (1993-12-01), None

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