Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4998490 | Bobbin housing assembly in a sewing machine having at least one hook | Kurt Biermann, Gerhard Steppat, Wilhelm Stapel, Michael Rosemann, Klaus D. Seiler | 1991-03-12 |
| 4981094 | Sewing machine having a device actuable by a pressure medium for applying a variable force to a presser element | Wilhelm Stapel | 1991-01-01 |