Script view a curved convex magnifying device

Details Script view a curved convex magnifying device Script view a curved convex magnifying device

1992-08-21

1994-05-03

Ben, Loha

Optical: systems and elements

Scale or indicia reading

Lens

359802, 359811, G02B 2702

Patent

active

053092791

ABSTRACT:
An optical instrument for magnifying printed or written material on three dimensional round or oval containers or objects. The instrument is an arced convex lens which provides distortion free magnification of multiple lines of text inscribed around the circumference or perimeter of vials, bottles, or other curved objects, while staying self affixed. The instrument is simply slid up or down, if required, to magnify the chosen text.

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patent: D296792 (1988-07-01), Lewis
patent: 307775 (1884-11-01), Kirk et al.
patent: 1367879 (1921-02-01), Laird
patent: 2389282 (1945-11-01), Stegeman
patent: 2787937 (1957-04-01), Prisament
patent: 2961108 (1960-11-01), Johnson
patent: 3052158 (1962-09-01), Sonni
patent: 4137863 (1979-02-01), Anglin
patent: 5204775 (1993-04-01), McDevitt

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