Issued Patents 2002
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6453867 | Valve for combustion engines | Ulrich Bertram | 2002-09-24 |
HR
Helmut Hans Ruhland
Overall (2002): #207,953 of 266,432Top 80%
1
Patents 2002