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EssilorLuxottica SA

EssilorLux
Active Patents
0
Total Holdings
3

Patent Holdings

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Patent No. Title Status Filing Date Grant Date Claims Actions
US4416814A Protein polymer hydrogels Expired / Lapsed 1982-09-10 1983-11-22 21 Details
US4349470A Protein polymer hydrogels Expired / Lapsed 1981-03-23 1982-09-14 26 Details
US4264493A Natural protein polymer hydrogels Expired / Lapsed 1979-09-14 1981-04-28 19 Details