Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5144990 | Switch in overhung rail systems | Manfred Grapentin | 1992-09-08 |
| 4934276 | Rail for overhead rail systems | Manfred Garpentin | 1990-06-19 |
| 4762069 | Rail with suspension and conductor holding claws | Manfred Grapentin | 1988-08-09 |
| 4706782 | Lifting and lowering a rail section | Heinz-Uwe Janssen | 1987-11-17 |