DL

Donald E. Loeffler

Shell Oil Compny: 1 patents #2,223 of 4,423Top 55%
Overall (All Time): #3,891,120 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
5070131 Gear oil viscosity index improvers Robert B. Rhodes, Rudolf J. A. Eckert 1991-12-03