Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4568127 | Cutting head for drift advancing machines | Wilfried Maier, Franz Schoffmann, Herwig Wrulich | 1986-02-04 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4568127 | Cutting head for drift advancing machines | Wilfried Maier, Franz Schoffmann, Herwig Wrulich | 1986-02-04 |