Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7552798 | Column climbing device and associated method of use | Robert Swierski | 2009-06-30 |
| 5509209 | Laser plumbing device | — | 1996-04-23 |
| 5184406 | Projected light plumb device | — | 1993-02-09 |