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经营范围
发明名称
Grubenausbau, insbesondere Streckenausbau
摘要
申请公布号
DE1107616(B)
申请公布日期
1961.05.31
申请号
DE1952G008951
申请日期
1952.05.27
申请人
GUTEHOFFNUNGSHUETTE STERKRADE AKTIENGESELLSCHAFT
发明人
HOLZ HEINRICH;TRAPPMANN WERNER
分类号
E21D11/28
主分类号
E21D11/28
代理机构
代理人
主权项
地址
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