DM

David N. J. Menz

Overall (All Time): #4,120,297 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4224102 Removal of bitumen from waste paper Heikki Mamers 1980-09-23