Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5090089 | Automatic door closing device | Ernst Schulte, Franz Kraft | 1992-02-25 |
| 4967444 | Device for damping the closing movement of a dual door spring-loaded or closure and closure control therefor | Franz Kraft | 1990-11-06 |