Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4233110 | Process for etching and preparing nickel-polyester offset printing plates | Siegfried Richter | 1980-11-11 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4233110 | Process for etching and preparing nickel-polyester offset printing plates | Siegfried Richter | 1980-11-11 |