JO

John D. Opfer

📍 Williamsville, NY: #404 of 663 inventorsTop 65%
🗺 New York: #67,335 of 115,490 inventorsTop 60%
Overall (All Time): #3,052,826 of 4,157,543Top 75%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
9033855 Athletic speed training device using biofeedback — 2015-05-19