Issued Patents 2004
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6806235 | Lubricants for drilling fluids | Heinz Mueller, Claus-Peter Herold, Frank Bongardt, Stephan von Tapavicza | 2004-10-19 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6806235 | Lubricants for drilling fluids | Heinz Mueller, Claus-Peter Herold, Frank Bongardt, Stephan von Tapavicza | 2004-10-19 |