Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6322052 | Ventilation valve | Alfons Leicht, Johann Georg Welz | 2001-11-27 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6322052 | Ventilation valve | Alfons Leicht, Johann Georg Welz | 2001-11-27 |