DH

Donald O. Hall

📍 Louisville, KY: #1,258 of 3,201 inventorsTop 40%
🗺 Kentucky: #4,404 of 11,577 inventorsTop 40%
Overall (All Time): #2,324,632 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4936505 Gas-fired coaxial water/air vehicle heater — 1990-06-26
4794908 Gas-fired heater means — 1989-01-03