SD

Stephen duPont

📍 Osprey, FL: #4 of 39 inventorsTop 15%
🗺 Florida: #6,875 of 67,251 inventorsTop 15%
Overall (All Time): #658,011 of 4,157,543Top 20%
8
Patents All Time

Issued Patents All Time

Showing 1–8 of 8 patents

Patent #TitleCo-InventorsDate
7509930 Internal combustion barrel engine 2009-03-31
6160895 Hearing aid system with acoustical horn 2000-12-12
D417279 Acoustical horn for behind-the-ear hearing aid 1999-11-30
5248272 Forwards facing rowing apparatus with feathering of the oar blades 1993-09-28
4943250 Articulated hydrofoil oar 1990-07-24
4867718 Hydrofoil oar 1989-09-19
4867719 Hydrofoil oar with movable outrigger 1989-09-19
4776821 Forwards facing hydrofoil oar 1988-10-11