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经营范围
发明名称
Improvements in or relating to supporting structures formed of relatively slidable frame elements
摘要
申请公布号
GB688393(A)
申请公布日期
1953.03.04
申请号
GB19500011439
申请日期
1950.05.08
申请人
REGIE DES MINES DE LA SARRE
发明人
分类号
E21D11/22
主分类号
E21D11/22
代理机构
代理人
主权项
地址
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