Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4417752 | Pressure-sensitive copying material | Viktor A. Krupp | 1983-11-29 |
| 4379721 | Pressure sensitive recording materials | Viktor A. Krupp | 1983-04-12 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4417752 | Pressure-sensitive copying material | Viktor A. Krupp | 1983-11-29 |
| 4379721 | Pressure sensitive recording materials | Viktor A. Krupp | 1983-04-12 |