Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D354598 | Combined dolly and ramp for motor vehicles | Karl Steffens, Gunter Gebhardt | 1995-01-17 |
| 5249907 | Dolly serving as a traveling aid for a defective wheel of a motor vehicle | Karl Steffens, Gunther Gebhardt | 1993-10-05 |
| 5248235 | Dolly serving as traveling aid for a defective wheel on a motor vehicle | Karl Steffens, Gunther Gebhardt | 1993-09-28 |