DH

David R. Harshberger

📍 Nappanee, IN: #20 of 71 inventorsTop 30%
🗺 Indiana: #8,550 of 33,936 inventorsTop 30%
Overall (All Time): #1,085,491 of 4,157,543Top 30%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
12325500 Alternating current boat propulsion system — 2025-06-10
9980472 Bowfishing arrow — 2018-05-29
9723820 Bowfishing arrow — 2017-08-08
9526234 Bowfishing arrow — 2016-12-27