Harsigny; Christian
Patent Applications and Registrations
Patent applications and USPTO patent grants for Harsigny; Christian.The latest application filed is for "progressive multifocal ophthalmic lens".
- Harsigny; Christian - Yerres FR
| Patent | Date |
|---|---|
| Progressive multifocal ophthalmic lens Grant 5,488,442 - Harsigny , et al. January 30, 1 | 1996-01-30 |
| Progressive opthalmic lenses and method of facilitating their manufacture Grant 5,235,359 - Chauveau , et al. August 10, 1 | 1993-08-10 |
| Large diameter positive power ophthalmic lens Grant 4,978,211 - Cornu , et al. December 18, 1 | 1990-12-18 |
| Ophthalmic lens having an aspheric surface Grant 4,279,480 - Bettiol , et al. July 21, 1 | 1981-07-21 |
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