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发明名称
Improvements in indanthrone and its derivatives
摘要
申请公布号
GB388043(A)
申请公布日期
1933.02.23
申请号
GB19310011617
申请日期
1931.05.13
申请人
E. I. DU PONT DE NEMOURS & CO.
发明人
分类号
C09B5/50
主分类号
C09B5/50
代理机构
代理人
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