Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9550189 | Electronic fine dust separator | — | 2017-01-24 |
| 4590876 | Edge guide and fabric feed for sewing machine | Helmut Mencke, Hans-Jurgen Gruner, Horst Nerlich, Heinz Grabasch | 1986-05-27 |