Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Ophthalmic lenses or blanks
Patent
1974-10-30
1979-05-08
Clark, Conrad J.
Optics: eye examining, vision testing and correcting
Spectacles and eyeglasses
Ophthalmic lenses or blanks
G02C 704
Patent
active
041533496
ABSTRACT:
This invention relates to novel contact lenses, to a method of preparing the same, and to apparatus for carrying out the method of the invention.
REFERENCES:
patent: 2241415 (1941-05-01), Moulton
patent: 2976576 (1961-03-01), Wichterle et al.
patent: 3093447 (1963-06-01), Crandon
patent: 3220960 (1965-11-01), Wichterle et al.
Clark Conrad J.
NPD Technologies, Inc.
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