DH

Duff M. Hay

📍 Sandwich, IL: #29 of 98 inventorsTop 30%
🗺 Illinois: #26,653 of 84,256 inventorsTop 35%
Overall (All Time): #1,594,720 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
7089877 Standoff mooring bar — 2006-08-15
5046442 Standoff mooring bar for boats — 1991-09-10
4781138 Standoff mooring bar for boats — 1988-11-01