RE

Roger Engelsgaard

CS Concrete Washout Systems: 2 patents #2 of 3Top 70%
📍 Rocklin, CA: #118 of 293 inventorsTop 45%
🗺 California: #185,134 of 386,348 inventorsTop 50%
Overall (All Time): #2,132,206 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
7635434 Treatment system and method for treating liquid concrete washout waste Kevin Mickelson 2009-12-22
7494586 Treatment system for liquid concrete washout waste Kevin Mickelson 2009-02-24