Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6516570 | Elevator hoistway | Christoph Liebetrau | 2003-02-11 |
| 6102163 | Elevator car with control box | Christoph Liebetrau, Kaspar Schindler | 2000-08-15 |
| 6035974 | Modular construction for elevators | Christoph Liebetrau | 2000-03-14 |
| 6032763 | Equipment for immobilizing an elevator car | Christoph Liebetrau, Albrecht Morlok | 2000-03-07 |
| 6006867 | Elevator guide apparatus | Christoph Liebetrau, Albrecht Morlok, Jurgen Mahncke | 1999-12-28 |
| 5833031 | Appendable elevator system | Christoph Liebetrau | 1998-11-10 |
| 5769183 | Drive unit for a self-propelled elevator car | Christoph Liebetrau, Albrecht Morlock, Helmut Heizmann, Ortwin Piper | 1998-06-23 |
| 5725074 | Apparatus for supporting and guiding an elevator | Christoph Liebetrau | 1998-03-10 |
| 5713432 | Drive frame for a self-propelled elevator car | Christoph Liebetrau, Albrecht Morlock, Ortwin Piper, Helmut Heizmann | 1998-02-03 |
| 5636712 | Apparatus for driving a self-propelled elevator | Wolfgang Muller, Christoph Liebetrau, Jurgen Kastle, Albrecht Morlok, Helmut Heizmann | 1997-06-10 |
| 5615864 | Elevator hoist apparatus with torque support device | Christoph Liebetrau | 1997-04-01 |
| 5209706 | Rubber belt crawler chain | Jurgen Hawener, Volker Kramer, Friedrich Depfenhart | 1993-05-11 |