Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4846434 | Counterbalanced arm assembly | — | 1989-07-11 |
| D295287 | Magnifying lamp | Douglas M. Spranger | 1988-04-19 |
| 4683526 | Asymmetric lamp | Kai Sorensen | 1987-07-28 |
| 4298921 | Lamp | Kai O. Soerensen | 1981-11-03 |
| 4280172 | Lamp | — | 1981-07-21 |