Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5939687 | Knee-operated switch for a working machine, especially a sewing machine | — | 1999-08-17 |
| 4815404 | Servo device for a multineedle sewing machine with engageable and disengageable needle bars | Wilhelm Stapel, Gunter Droste | 1989-03-28 |