BR

Bruce B. Roberts

📍 Northfield, MN: #104 of 168 inventorsTop 65%
🗺 Minnesota: #32,449 of 52,454 inventorsTop 65%
Overall (All Time): #4,020,544 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4537576 Educational book with interactive elements Howard I. Thorsheim 1985-08-27