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发明名称
Rallonge de soutènement pour exploitation minière
摘要
申请公布号
FR1230085(A)
申请公布日期
1960.09.13
申请号
FR19590796165
申请日期
1959.05.30
申请人
发明人
VANWERSCH LUDWIG;VANWERSCH ALOYS;VANWERSCH PETER
分类号
E21D17/086
主分类号
E21D17/086
代理机构
代理人
主权项
地址
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