Underwater mask

Photography and optical equipment – Ophthalmic article – Eyeglasses – eyewear – or frame therefor

Patent

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Details

D16311

Patent

active

D03529509

REFERENCES:
patent: D290764 (1987-07-01), Berenson
patent: D292329 (1987-10-01), Vitaloni
patent: D310277 (1990-08-01), Sugrta
patent: D315619 (1991-03-01), Goldman
patent: D342810 (1993-12-01), Berenson

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