Spectacle frame without lenses

Photography and optical equipment – Ophthalmic article – Element or attachment

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Patent

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D03713849

REFERENCES:
patent: D183096 (1958-06-01), Hirschman
patent: D198052 (1964-04-01), Petitto
patent: D198996 (1964-08-01), Lissac
patent: D311197 (1990-10-01), Jannard
patent: D330560 (1992-10-01), Dweck
patent: 3238005 (1966-03-01), Petitto
patent: 3252747 (1966-05-01), Robins
patent: 4812031 (1989-03-01), Evans
patent: 4951322 (1990-08-01), Lin

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