Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4892556 | Process for transfer printing on leather substrates impregnated with aminoplast pre-condensate | Herbert W. A. Schulzen, deceased, Elisabeth A. Schulzen, heir, Holger Schulzen, heir | 1990-01-09 |