Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4757698 | Dust extraction device for flat knitting machines | Eugen Frosch, Ernst Goller, Jochen Dieringer | 1988-07-19 |
| 4667489 | Dust extraction equipment for flat bed knitting machines | Eugen Frosch | 1987-05-26 |