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经营范围
发明名称
Improvements in or relating to processes for pelleting carbon black
摘要
申请公布号
GB640661(A)
申请公布日期
1950.07.26
申请号
GB19470022642
申请日期
1947.08.14
申请人
COLUMBIAN CARBON COMPANY
发明人
分类号
C09C1/58
主分类号
C09C1/58
代理机构
代理人
主权项
地址
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