Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4356008 | Knocking arrangement for electric precipitation | Rudolf Franzen | 1982-10-26 |
| 4353718 | Electric precipitator | Rudolf Franzen, Michael Zeug | 1982-10-12 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4356008 | Knocking arrangement for electric precipitation | Rudolf Franzen | 1982-10-26 |
| 4353718 | Electric precipitator | Rudolf Franzen, Michael Zeug | 1982-10-12 |