Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7252203 | Mobile crane having a superlift device | Ralf Frankenberger, Jörg Lattwein | 2007-08-07 |
| 6568547 | Crane, especially a self-propelled crane | Alfons Weckbecker | 2003-05-27 |
| 6516961 | Ringlift crane | Alexander Knecht, Michael Biermann, Ralf Frankenberger | 2003-02-11 |
| 6474487 | Ring lifting crane | — | 2002-11-05 |