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Class Information
Number:
351/229
Name:
Optics: eye examining, vision testing and correcting
>
Eye examining or testing instrument
>
Subjective type
>
Including trial frame
> With plural lens carrier
Description:
Subject matter including frame structure for selectively supporting a plurality of different test lenses in series in separate spaced apart relation, and usually having open-topped ring-type holders.
Patents under this class:
Patent Number
Title Of Patent
Date Issued
7438416
Optometric apparatus
Oct. 21, 2008
5742375
Head mounted lens support
Apr. 21, 1998
5281984
Illumination apparatus for ophthalmic refractors
Jan. 25, 1994
5104214
Trial frames, adjustable spectacles and associated lens systems
Apr. 14, 1992
4703964
Tinted contact lens fitter
Nov. 3, 1987
4500180
Motorized refraction apparatus
Feb. 19, 1985
4236793
Ophthalmic refracting device
Dec. 2, 1980
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