DH

Duane Hoffman

📍 Shasta Lake, CA: #12 of 24 inventorsTop 50%
🗺 California: #247,236 of 386,348 inventorsTop 65%
Overall (All Time): #2,632,501 of 4,157,543Top 65%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
11225579 Method of manufacturing colored chalk — 2022-01-18