DR

David M. Robey

UN Unknown: 2 patents #12,644 of 83,584Top 20%
📍 Alexandria, VA: #635 of 1,823 inventorsTop 35%
🗺 Virginia: #12,642 of 34,511 inventorsTop 40%
Overall (All Time): #2,302,829 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5222732 Tennis teaching device and method — 1993-06-29
5056785 Tennis stroke practice apparatus — 1991-10-15