Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9810597 | Sniffer leak detector with multi-stage membrane pump | Hjalmar Bruhns, Daniel Wetzig, Norbert Rolff | 2017-11-07 |
| 7640790 | Method for operating a hydrogen test leak unit | — | 2010-01-05 |