Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4969810 | Spiral displacement machine with radially inner seal gap for temperature expansion | Helga Wellbrock | 1990-11-13 |
GS
Gunter Stolle
Overall (All Time): #3,915,008 of 4,157,543Top 95%
1
Patents All Time