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发明名称
Intimate mixtures of pitch dust with other materials and method of providing same
摘要
申请公布号
US2980516(A)
申请公布日期
1961.04.18
申请号
US19560594713
申请日期
1956.06.29
申请人
FRIEDRICH CROY
发明人
CROY FRIEDRICH
分类号
C10L5/14
主分类号
C10L5/14
代理机构
代理人
主权项
地址
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