[1]CurrentPatentAssignee:BAYERAG-DE2515146,1976,A1[Chem.Abstr.,1977,vol.86,#71947][Chem.Abstr.,1977,vol.86,#71947]
[2]CurrentPatentAssignee:BAYERAG-DE2551483,1977,A1[Chem.Abstr.,1977,vol.87,#67862][Chem.Abstr.,1977,vol.87,#67862]
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