HT

Howard I. Thorsheim

📍 Northfield, MN: #104 of 168 inventorsTop 65%
🗺 Minnesota: #32,449 of 52,454 inventorsTop 65%
Overall (All Time): #4,020,545 of 4,157,543Top 100%
1
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4537576 Educational book with interactive elements Bruce B. Roberts 1985-08-27