Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6178989 | Safety element for a duct | Frank Kampfmann, Hannelore Kolb | 2001-01-30 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6178989 | Safety element for a duct | Frank Kampfmann, Hannelore Kolb | 2001-01-30 |