Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6074589 | Tool for cutting and shaping an unfinished concrete roofing tiles and a method for using a tool for cutting and shaping unfinished roofing tiles | Heinrich Stephan, Frank Wojtalewicz | 2000-06-13 |
| 5885055 | Collation assemblies | Frank Wojtalewicz, Dietrich Thor Straten, Gunter Weiss, Peter Srostlik, Nicholas Lyons +3 more | 1999-03-23 |
| 4549726 | Mounting member for mounting an engine or transmission of a motor vehicle | Ralf-Thilo Schulz | 1985-10-29 |