Patents per Year
Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| RE41620 | Chalk line with viewing window | Vincent Cook | 2010-09-07 | |
| 6915587 | Chalk line with viewing window | Vincent Cook | 2005-07-12 | $19,357,000 |
| 6334261 | Collapsible square | Robert L. Owens | 2002-01-01 |