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经营范围
发明名称
Pic de havage
摘要
申请公布号
FR1294810(A)
申请公布日期
1962.06.01
申请号
FR19610858975
申请日期
1961.04.17
申请人
CHARBONNAGES DE FRANCE
发明人
分类号
E21C35/18
主分类号
E21C35/18
代理机构
代理人
主权项
地址
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