Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6313912 | Laser leveling instrument with a leveling base and fine self-leveling of the laser beam | Wilfried Piske, Gerhard Predl, Heinz Bernhard | 2001-11-06 |
| 5331395 | Device for aligning a laser leveling instrument along a building line | Wilfried Piske | 1994-07-19 |