Eye examining or testing instrument > Subjective type > Including trial frame > With individual lens holder > Patents

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Class Information
Number: 351/230
Name: Optics: eye examining, vision testing and correcting > Eye examining or testing instrument > Subjective type > Including trial frame > With individual lens holder
Description: Subject matter including individual lens holders for single test lenses which may be temporarily and interchangeably inserted into trial or conventional eyeglass frames.

Patents under this class:

Patent Number	Title Of Patent	Date Issued
6786601	Method of conveniently thwarting infant amblyopia after cataract removal	Sep. 7, 2004
5488439	Lens holder system for eyeglass frame selection	Jan. 30, 1996
4801200	Optometric lens trial frame	Jan. 31, 1989
4783162	Spectacle mounted variable neutral density filter holder	Nov. 8, 1988
4494837	Pupil location gauge	Jan. 22, 1985
4381143	Ophthalmic test lens holder	Apr. 26, 1983
4129361	Eye testing device for prescribing eyeglasses	Dec. 12, 1978
4029402	Optical aid for use in the selection of spectacle frames	Jun. 14, 1977