JJ

J. Roy Hack, Jr.

📍 Tucson, AZ: #9 of 186 inventorsTop 5%
🗺 Arizona: #42 of 945 inventorsTop 5%
Overall (1989): #25,090 of 140,708Top 20%
2
Patents 1989

Issued Patents 1989

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4878474 Vent apparatus for fuel injection system — 1989-11-07
4874013 Emergency fuel system apparatus — 1989-10-17