Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5873949 | Device for pressurized water discharge pipe | Franz Tamm, Arnold Joachim, Siegbert Arndt | 1999-02-23 |
| 4909267 | Cooling pipe for bar | Franz Tamm, Arnold Joachim, Bernhard Horicke, Joachim Schulz, Hartmut Richter | 1990-03-20 |