Combination sunglasses and 3-D glasses

Photography and optical equipment – Ophthalmic article

Patent

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D16116

Patent

active

D02829347

REFERENCES:
patent: D161575 (1951-01-01), Devay
patent: 1616967 (1927-02-01), Halikman
patent: 1643509 (1927-09-01), Moran
patent: 2389742 (1945-11-01), Rey
patent: 3402005 (1968-09-01), Liautaud et al.
Optometric Weekly, 4-27-1972, p. 35, "Urania" Frame by Trans World Eyewear #7020.

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