Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4738537 | Method and apparatus for measuring a quantity of a greasy product on a surface to be investigated, and a take upstrip for the greasy product | Jean-Pierre Yquel, Jean F. Grollier | 1988-04-19 |