Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7538939 | Stereomicroscope or additional element for a stereomicroscope | Ruedi Rotterman, Peter Bertschi | 2009-05-26 |
| 4515678 | Process and catalyst for the hydrogenation of coal | Hans J. Wernicke | 1985-05-07 |
| 4338153 | Welding plastic tube lining | — | 1982-07-06 |