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发明名称
Rallonges de soutènement de mine avec assemblage d'articulation à denture oblique
摘要
申请公布号
FR1069856(A)
申请公布日期
1954.07.13
申请号
FRD1069856
申请日期
1953.01.13
申请人
GUTEHOFFNUNGSHU:TTE OBERHAUSEN AKTIENGESELLSCHAFT
发明人
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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