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发明名称
Kugelkalotte als Stuetzelement fuer Gebirgsanker im Gruben- und Tunnelausbau
摘要
申请公布号
DE1094689(B)
申请公布日期
1960.12.15
申请号
DE1958B050576
申请日期
1958.10.02
申请人
BERGBAUFORTSCHRITT G.M.B.H.
发明人
?
分类号
E21D21/00
主分类号
E21D21/00
代理机构
代理人
主权项
地址
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