Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4841415 | Apparatus for lighting a sewing area of a sewing machine | — | 1989-06-20 |
| 4805544 | Sewing machine with thread monitor for the bobbin thread | Bernhard Mertel, Erich Willenbacher | 1989-02-21 |