DJ

D. Stephans Damtoft, Jr.

FS French Systems: 1 patents #4 of 10Top 40%
🗺 New York: #67,335 of 115,490 inventorsTop 60%
Overall (All Time): #4,044,119 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4482461 Backwash control for constant volume-pressure filtration system David B. Hindman, Norman E. Wood, David N. Foster, James S. Paduchowski 1984-11-13