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发明名称
CHARBONS D'ALLUMAGE A RESISTANCE PROPRE ELEVEE.
摘要
申请公布号
BE512288(A1)
申请公布日期
1954.01.22
申请号
BE19520512288
申请日期
1952.06.21
申请人
C. CONRADTY
发明人
C. CONRADTY
分类号
主分类号
代理机构
代理人
主权项
地址
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