PW

Paul W. Witwicki

CF Charbonnages De France: 1 patents #1 of 9Top 15%
Overall (1989): #70,268 of 140,708Top 50%
1
Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4880311 Apparatus for supplying unclogging gas to fluidized bed apparatus Arnaud Delebarre 1989-11-14