Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5122559 | Lightweight building board | Michael Portugall, Wilhelm Friedrich Beckerle, Hans-Juergen Denu | 1992-06-16 |
BD
Bernard Dotzauer
Overall (All Time): #3,852,951 of 4,157,543Top 95%
1
Patents All Time