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Derek Roy Oldnall

📍 Irene, ZA: #2 of 22 inventorsTop 10%
Overall (All Time): #1,523,460 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
9150939 Method for the commercial production of iron Gerard Pretorius 2015-10-06
8613787 Method for the commercial production of iron Gerard Pretorius 2013-12-24
5579334 Method and apparatus for reacting solid particulate reagents in an electric furnace Rodney C. Baxter, Bodo R. Rohrmann 1996-11-26