Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5636712 | Apparatus for driving a self-propelled elevator | Wolfgang Muller, Christoph Liebetrau, Utz Richter, Albrecht Morlok, Helmut Heizmann | 1997-06-10 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5636712 | Apparatus for driving a self-propelled elevator | Wolfgang Muller, Christoph Liebetrau, Utz Richter, Albrecht Morlok, Helmut Heizmann | 1997-06-10 |