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Volker Kretzschmann

R& Roth-Technik Gmbh &: 1 patents #3 of 8Top 40%
Overall (All Time): #4,029,539 of 4,157,543Top 100%
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4431392 Apparatus for extruding concrete Peter Traub 1984-02-14