DC

Der-Shyang Cheng

CS China Steel: 1 patents #20 of 117Top 20%
Overall (All Time): #3,874,316 of 4,157,543Top 95%
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5007958 Lime-based injection powder for steel-refining Yeong-Huei Chung 1991-04-16