Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4730924 | Lens meter and method of measurement of progressive multifocal lens using the same | Henri Allard, Charles Villeneuve, Yukio Ikezawa | 1988-03-15 |
| 4689978 | Side bar wafer lock, an improved spring retainer for said lock, and a method of using said spring retainer in said lock | — | 1987-09-01 |