Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4817414 | Measuring arrangement for detecting the level of combustible gases mixed with air | Werner Hagen, Gerd Mahrt | 1989-04-04 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4817414 | Measuring arrangement for detecting the level of combustible gases mixed with air | Werner Hagen, Gerd Mahrt | 1989-04-04 |