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经营范围
发明名称
Pyrazolone azo dyestuffs
摘要
申请公布号
US2047315(A)
申请公布日期
1936.07.14
申请号
US19310535296
申请日期
1931.05.05
申请人
CELANESE CORPORATION
发明人
ELLIS GEORGE HOLLAND
分类号
主分类号
代理机构
代理人
主权项
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