Vision screening kit

Details Vision screening kit Vision screening kit

1980-05-29

1981-07-21

Corbin, John K.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Folding

351 36, 351 38, A61B 302, A61B 300

Patent

active

042794790

ABSTRACT:
A simple, inexpensive vision screening device in the form of a compact kit.

REFERENCES:
patent: 1500248 (1924-07-01), Lewis
patent: 1686962 (1928-10-01), Deninson
patent: 1953268 (1934-04-01), Scott
patent: 1990218 (1935-02-01), Bailey
patent: 2478662 (1949-08-01), Long
patent: 2795993 (1957-06-01), Leverett et al.

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