Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9283654 | Method of grinding spring ends and spring end grinding machine | Uwe-Peter Weigmann, Thomas Kuttler | 2016-03-15 |
| 4489770 | Waterproof enclosure | — | 1984-12-25 |
| 4487446 | Combined bumper and air storage system | — | 1984-12-11 |