Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5617895 | Hydraulic control valve | Friedhelm Zehner, Joachim Zumbraegel | 1997-04-08 |
BP
Berthold Pfuhl
Overall (1997): #172,945 of 185,788Top 95%
1
Patents 1997