Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4814632 | Safety device | Detlef Lohmuller, Heinz Tilmans, Klaus Genuit, Joachim Cardinal, Gerhard Buhr | 1989-03-21 |
| 4802312 | Wet sand blasting with pressurized water feed | Gerhard Buhr | 1989-02-07 |