FT

Friedrich Theysohn

Overall (1982): #14,164 of 81,411Top 20%
2
Patents 1982

Issued Patents 1982

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4364664 Dual worm extruder having wear resistant bore walls 1982-12-21
4327859 Method of coating dual-worm extruder bores 1982-05-04