Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4515483 | Apparatus for removing substances from the inner walls of vessels | Rudolf Muller, Harald Dofke, Detlef Krieger | 1985-05-07 |
| 4245399 | Material dryer with air and screw agitator | Rudolf Muller, Harald Doefke, Detlef Krieger | 1981-01-20 |