Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5759084 | Grinding machine for ophthalmic glasses | Raynald G. M. Longuet | 1998-06-02 |
| 5554067 | Frame holder for prescription glasses | Raynald G. M. Longuet | 1996-09-10 |
| 5371974 | Automatic machine for grinding and bevelling ophthalmic glasses | Jean-Louis Simon, Raynald G. M. Longuet | 1994-12-13 |
| 5321915 | Machines for grinding and bevelling opthalmic lenses | Jean-Pierre M. F. Langlois | 1994-06-21 |
| 5307150 | Apparatus for automatically taking a reading of the shape and/or the profile of the inner contour of a frame rim of glasses | Jean-Pierre M. F. Langlois | 1994-04-26 |
| 5161333 | Device for recalibrating a machine for grinding ophthalmic glasses | Jean-Pierre M. F. Langlois | 1992-11-10 |
| 4978254 | Tool for machining and bevelling polycarbonate ophthalmic glasses lenses using a standard grinding machine | Jean-Pierre M. F. Langlois | 1990-12-18 |
| 4930952 | Glasses frame carrier for a reproducing machine | Raynald Marcel Gaston Longuet | 1990-06-05 |
| 4829715 | Machines for grinding and bevelling ophthalmic glasses | Jean-Pierre M. F. Langlois | 1989-05-16 |