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经营范围
发明名称
Manufacture of dibenzanthrone derivatives
摘要
申请公布号
US1967617(A)
申请公布日期
1934.07.24
申请号
US19320648977
申请日期
1932.12.27
申请人
E. I. DU PONT DE NEMOURS & COMPANY
发明人
HOWELL EDWARD T.
分类号
C07C45/64;C07C45/65;C07C45/72
主分类号
C07C45/64
代理机构
代理人
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地址
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