Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4976997 | Surface composition for a substrate and method of preparation | Elfriede Stockel | 1990-12-11 |
| 4935463 | Surface composition for a substrate and method of preparation | Elfriede Stockel | 1990-06-19 |