Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8056394 | Procedure for measuring the concentration of a gas | Heinz-Peter Frerichs, Hans-Günter Zimmer, Tobias Kolleth | 2011-11-15 |
| 7918123 | Gas sensor | Heinz-Peter Frerichs | 2011-04-05 |