Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5751120 | DC operated electronic ballast for fluorescent light | Ernst Gabriel | 1998-05-12 |
| 5249498 | Neck rod member for stringed instruments | Hans-Peter Wilfer | 1993-10-05 |
| 4852449 | Neck rod member for stringed instruments | — | 1989-08-01 |