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发明名称
Colorants 1, 1'-dihydroxyazoïques et procédé de préparation de ces colorants
摘要
申请公布号
FR870186(A)
申请公布日期
1942.03.04
申请号
FRD870186
申请日期
1941.02.20
申请人
SANDOZ S. A.
发明人
分类号
C09B45/16
主分类号
C09B45/16
代理机构
代理人
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