Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4343652 | Chromogen solutions for pressure-sensitive mark-recording systems | Claude A. Guillaume | 1982-08-10 |
| 4335013 | Solvents useful in pressure-sensitive mark-recording systems | Claude A. Guillaume | 1982-06-15 |