Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8215876 | Shield cap for a shield-type mining support | Siamak Onsori, Stefan Hengstler, Detlef Hahn, Sebastian Mundry | 2012-07-10 |
DL
Detlev Lettau
Overall (All Time): #3,214,046 of 4,157,543Top 80%
1
Patents All Time