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经营范围
发明名称
Improvements relating to linings for mine or other shafts or tunnels
摘要
申请公布号
GB865535(A)
申请公布日期
1961.04.19
申请号
GB19570014700
申请日期
1957.05.08
申请人
GUTEHOFFNUNGSHUETTE STERKRADE AKTIENGESELLSCHAFT
发明人
分类号
E21D5/11;E21D11/00
主分类号
E21D5/11
代理机构
代理人
主权项
地址
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