JH

John C. Hanegraaf

📍 Appleton, WI: #966 of 1,506 inventorsTop 65%
🗺 Wisconsin: #23,834 of 40,088 inventorsTop 60%
Overall (All Time): #3,901,087 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4919016 Tab top beverage container opener — 1990-04-24