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经营范围
发明名称
MINE ARCHES
摘要
申请公布号
GB2043132(B)
申请公布日期
1983.05.25
申请号
GB19790044647
申请日期
1979.12.31
申请人
发明人
分类号
E21D11/22;(IPC1-7):E21D11/22
主分类号
E21D11/22
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代理人
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地址
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