JH

Joan D. Harwin

UN Unknown: 2 patents #12,644 of 83,584Top 20%
📍 Virginia Beach, VA: #452 of 992 inventorsTop 50%
🗺 Virginia: #18,729 of 34,511 inventorsTop 55%
Overall (All Time): #3,893,166 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
D322812 Mathematical educational device — 1991-12-31