Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5848990 | Device for introducing active substance into a patient | Benno Rothenhausler, Hans Steffen | 1998-12-15 |
| 4886499 | Portable injection appliance | Hans Steffen, Christian Surber | 1989-12-12 |