FK

Frank Kay

MA Mannesmann Ag: 1 patents #514 of 1,341Top 40%
Overall (All Time): #4,005,399 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
4624504 Method of excavating overburden in surface mining operations Rudiger Franke, Aby Weiss, Hans Goergen, Christian Niemann-Delius 1986-11-25