Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Combined
Patent
1998-12-11
1999-06-22
Mai, Huy
Optics: eye examining, vision testing and correcting
Spectacles and eyeglasses
Combined
351 50, G02C 100
Patent
active
059147695
ABSTRACT:
The invention is directed to a rear view mirror which is attachable to most diving masks in production. A mirror retaining device is clipped by an attachment to the mask and a convex mirror is positioned in an operational position within the line of vision of the diver.
REFERENCES:
patent: 1431147 (1922-10-01), Borresen
patent: 5764335 (1998-06-01), Berke
Lukasik Frank A.
Mai Huy
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