DR

Dennis A. Ray

📍 Bemidji, MN: #1 of 4 inventorsTop 25%
🗺 Minnesota: #35 of 2,022 inventorsTop 2%
Overall (1989): #11,160 of 140,708Top 8%
3
Patents 1989

Issued Patents 1989

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
4846137 Fuel heater 1989-07-11
4829969 Spiral distributor fuel heater 1989-05-16
4827889 Fuel heater thermostat 1989-05-09