Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7861426 | Optomechanical leveling device | Roman Steffen, Peter Bruggmueller, Petra Eyrich | 2011-01-04 |
| 7593172 | Adjustable optical assembly | Roman Steffen, Lieu-Kim Dang | 2009-09-22 |
| 7500317 | Portable self-leveling laser emitter with plumb beam | Roman Steffen | 2009-03-10 |