SS

Steven A. Spigarelli

📍 Bemidji, MN: #58 of 129 inventorsTop 45%
🗺 Minnesota: #32,449 of 52,454 inventorsTop 65%
Overall (All Time): #3,798,099 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5314638 Ion exchange materials produced from hydrolyzed, debituminized, sulfonated peat Gerald H. Morine 1994-05-24