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经营范围
发明名称
Perfectionnements apportés aux étançons de mines
摘要
申请公布号
FR1335917(A)
申请公布日期
1963.08.23
申请号
FR19620911996
申请日期
1962.10.11
申请人
BOCHUMER EISENHUETTE HEINTZMANN & CO.
发明人
分类号
E21D15/30;E21D15/32
主分类号
E21D15/30
代理机构
代理人
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地址
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