Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4890035 | Discharge electrode with microstructure surface | Franz Prein, Jurgen Wiegand, Peter Frey | 1989-12-26 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4890035 | Discharge electrode with microstructure surface | Franz Prein, Jurgen Wiegand, Peter Frey | 1989-12-26 |