Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4887986 | Surf-riding board or sailing board | Michael Langenbach, Reinhard Koppen | 1989-12-19 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4887986 | Surf-riding board or sailing board | Michael Langenbach, Reinhard Koppen | 1989-12-19 |