Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5340365 | Process for producing chrome leather | Bernhard Wehling, Franz Schade, Joachim Kochta, Herbert Burkhardt | 1994-08-23 |
| 4333731 | Method and apparatus for the manufacture of tanned hides and skins | Horst Zapfel | 1982-06-08 |