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发明名称
Feinmahlen von Graphit
摘要
申请公布号
DE476495(C)
申请公布日期
1931.10.14
申请号
DE1925H101065D
申请日期
1925.03.17
申请人
GEORG HANEKOP
发明人
分类号
B02C19/00;C01B31/00
主分类号
B02C19/00
代理机构
代理人
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