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发明名称
MANUFACTURE OF CARBON BLACK
摘要
申请公布号
CA538946(A)
申请公布日期
1957.04.02
申请号
CAD538946
申请日期
申请人
COLUMBIAN CARBON COMPANY
发明人
GEORGE L. HELLER
分类号
主分类号
代理机构
代理人
主权项
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