NK

Norbert Katthöfer

DG Dbt Gmbh: 1 patents #39 of 80Top 50%
Overall (All Time): #3,352,012 of 4,157,543Top 85%
1
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
7350874 Method and device for extracting extraction products in underground mining Reinhold Brüggemann, Detlef Hahn, Frank Fischer, Jochen Hammel, Jorg Wirtz +8 more 2008-04-01