Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5375546 | Shortening of needle thread end at the beginning and end of sewing in lockstitch sewing machines | Edgar Butzen, Gunther Denuell, Karl-Heinz Walther | 1994-12-27 |
| 5103749 | Process and sewing machine for sewing together layers of fabric according to a pattern | Heribert Geisselmann, Manfred Frank, Erich Willenbacher | 1992-04-14 |
| 4658741 | Method and apparatus for determining the amount of advance of a plurality of material plies | Erich Willenbacher, Oskar Braun, Dietmar Becker | 1987-04-21 |
| 4589363 | Sewing machine for automatically making edge-parallel seams | Erich Willenbacher | 1986-05-20 |
| 4423690 | Sewing machine for producing curved edge parallel seams | Erich Willenbacher | 1984-01-03 |
| 4296700 | Device for the automatic guiding of a workpiece on a sewing machine | Erich Willenbacher | 1981-10-27 |