Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5299518 | Lower feed dog lifting, lowering, and horizontal coupling | Karl-Heinz Walther | 1994-04-05 |
| 5113774 | Thread cutting device on a sewing machine | Karl-Heinz Walter | 1992-05-19 |
| 5113324 | Sewing machine with a lamp | — | 1992-05-12 |
| 4691650 | Lockswitch sewing machine having a rotary hook | — | 1987-09-08 |
| 4677926 | Positioning device for sewing machine main shaft | Erich Willenbacher | 1987-07-07 |
| 4669401 | Lockstitch sewing machine with a rotary hook | — | 1987-06-02 |
| 4589362 | Thread cutting device in lockstitch sewing machines | — | 1986-05-20 |
| 4569297 | Needle bar detachable drive and stroke adjusting mechanism | — | 1986-02-11 |
| 4550671 | Material presser device for a sewing machine | — | 1985-11-05 |
| 4467738 | Detachable drive for sewing machine trimming knife | Karl-Heinz Walther, Kurt Vollmar | 1984-08-28 |
| 4422398 | Top feed device for a sewing machine | — | 1983-12-27 |