HG

Howard Grabhorn

📍 Tualatin, OR: #156 of 324 inventorsTop 50%
🗺 Oregon: #12,654 of 28,073 inventorsTop 50%
Overall (All Time): #2,241,479 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
6109835 Biofilter bags for erosion control — 2000-08-29
5595458 Biofilter bags for erosion control — 1997-01-21