Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5213717 | Apparatus for fumigating waste waters | Werner Pieper, Wilhelm Giechau, Hilmar Roszinski | 1993-05-25 |
WD
Wilhelm P. Doppelfeld
Overall (All Time): #3,824,666 of 4,157,543Top 95%
1
Patents All Time