Issued Patents 1997
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5621975 | Remotely controlled self-leveling laser instrument with modular capability | — | 1997-04-22 |
| 5619802 | Automatic level and plumb tool | Christiaan A. Ligtenberg | 1997-04-15 |
| 5617202 | Diode laser co-linear and intersecting light beam generator | — | 1997-04-01 |
| 5610711 | Remote pointing system for a self-leveling laser instrument | — | 1997-03-11 |