GK

Gehard Kuhner

DR Deutsche Gold- Und Silber-Scheideanstalt Vormals Roessler: 1 patents #70 of 180Top 40%
Overall (All Time): #4,108,820 of 4,157,543Top 100%
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4195068 Process for the production of furnace black Lothar Rothbuhr, Gunther Dittrich 1980-03-25