DF

Darrel S. Fleischman

UN Unknown: 1 patents #29,356 of 83,584Top 40%
Overall (All Time): #3,759,127 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
5582734 Oxidation ditch modification and automated control system for nitrogen removal and sludge settling improvements Thomas E. Coleman, W. Brent Denham, H. David Stensel 1996-12-10