DK

Donald J. Keefe

UE US Dept of Energy: 2 patents #577 of 5,099Top 15%
📍 Lemont, IL: #63 of 212 inventorsTop 30%
🗺 Illinois: #26,653 of 84,256 inventorsTop 35%
Overall (All Time): #1,680,138 of 4,157,543Top 45%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
4528457 DC-AC converter for supplementing an AC power source Oscar D. Despe 1985-07-09
4277308 Count-doubling time safety circuit Gordon K. Rusch, William P. McDowell 1981-07-07
4236067 Automatic sweep circuit 1980-11-25