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经营范围
发明名称
Improvements in or relating to reduction of c carbon content in tar
摘要
申请公布号
GB766114(A)
申请公布日期
1957.01.16
申请号
GB19550009295
申请日期
1955.03.30
申请人
KOPPERS COMPANY, INC.
发明人
分类号
C10C1/00
主分类号
C10C1/00
代理机构
代理人
主权项
地址
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