Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5190791 | Infrared radiation process for a high contrast in the natural grain of a naturally pale wood | Siegfried Kohler, Siegfried Lang, Luise Schellhorn, Erwin Lutz | 1993-03-02 |