Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4692101 | Liquid ring vacuum pump arrangement having minimized operating liquid consumption | Heinz Bohn | 1987-09-08 |
| 4655688 | Control for liquid ring vacuum pumps | Heinz Bohn, Reinhold Luhmann | 1987-04-07 |