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经营范围
发明名称
Improvements in the manufacture of carbon black
摘要
申请公布号
GB675819(A)
申请公布日期
1952.07.16
申请号
GB19500014755
申请日期
1950.06.13
申请人
COLUMBIAN CARBON COMPANY
发明人
分类号
C09C1/50
主分类号
C09C1/50
代理机构
代理人
主权项
地址
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