Pair of spectacle frame eye pieces

Photography and optical equipment – Optical article not elsewhere specified – Lens or objective

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D1606

Patent

active

D02650975

REFERENCES:
patent: D121893 (1940-08-01), Doebrich
patent: D256025 (1980-07-01), Lewis
patent: 1986089 (1935-01-01), Wingate
Manufacturing Optician International, vol. 22, #2, 8-1969, p. 105-Frame.
Optical Journal & Review of Optometry, 9-15-1969, inside back cover, Octagonal Style Eyeglasses.
Optometric Weekly, 4-13-1972, p. 18-Round oval frame.

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