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[1]CurrentPatentAssignee:I.G.FARBENINDUSTRIEAG(historic)-DE716599,1939,C
[2]CurrentPatentAssignee:I.G.FARBENINDUSTRIEAG(historic)-DE716599,1939,C
[1]CurrentPatentAssignee:I.G.FARBENINDUSTRIEAG(historic)-DE716599,1939,C
[2]CurrentPatentAssignee:I.G.FARBENINDUSTRIEAG(historic)-DE716599,1939,C
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[1]Chattaway;Strouts[JournaloftheChemicalSociety,1924,vol.125,p.2425]Tomasik[RocznikiChemii,vol.8,p.345][ChemischesZentralblatt,1928,vol.99,#II,p.1883]