DH

Dennis R. Hughes

AS A. O. Smith: 2 patents #1 of 17Top 6%
📍 Hartford, WI: #1 of 7 inventorsTop 15%
🗺 Wisconsin: #116 of 1,637 inventorsTop 8%
Overall (1989): #29,138 of 140,708Top 25%
2
Patents 1989

Issued Patents 1989

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4823865 Turbulator construction for a heat exchanger — 1989-04-25
4817564 Water heater construction Marc W. Akkala 1989-04-04