NG

Norman J. Grifhorst

📍 Wichita, KS: #571 of 1,728 inventorsTop 35%
🗺 Kansas: #4,268 of 12,005 inventorsTop 40%
Overall (All Time): #2,367,472 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4343470 Ball rolling game — 1982-08-10
4190250 Game apparatus — 1980-02-26