FS

Frederick Anthony Schaefer

EL Edw. C. Levy: 1 patents #8 of 32Top 25%
Overall (All Time): #1,587,767 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
7227882 System and method of processing electric arc furnace dust 2007-06-05
7045038 Process for treating waste oil 2006-05-16
6640210 Customer service operation using wav files Paul Michael Brashear 2003-10-28