Bifocal safety glasses

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

Patent

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1606

Patent

active

D04276205

REFERENCES:
patent: D310377 (1990-09-01), Wang-Lee
patent: D356322 (1995-03-01), Bolle
patent: D360645 (1995-07-01), Canavan et al.
patent: D369174 (1996-04-01), Cooper et al.
patent: D393650 (1998-04-01), Salce
patent: 4824233 (1989-04-01), Jannard
patent: 4850058 (1989-07-01), Cheng

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