Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4848266 | Device for treating internal surfaces of cylindrical articles | Hans-Michael Wardenga, Gottlieb Polzer, Juergen Lange, Klaus Schrader, Frank Junker +3 more | 1989-07-18 |
| 4836130 | Device for coating metallic internal surfaces | Hans-Michael Wardenga, Gottlieb Polzer, Juergen Lange, Klaus Schrader, Frank Junker +3 more | 1989-06-06 |