Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8083365 | Helmet mounted lighting system | Axel Weller | 2011-12-27 |
| D339565 | Recessed lighting power system module | Ludwig Gabrecht, Helmuth K. Unger | 1993-09-21 |
| 5177404 | Removable power service module for recessed lighting system | Ludwig Gabrecht, Helmuth K. Unger | 1993-01-05 |
| 4370769 | Cushion utilizing air and liquid | Ralph Herzig | 1983-02-01 |