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发明名称
Improvements in centring devices for supporting segmental elements in the construction of tunnels and the like
摘要
申请公布号
GB387488(A)
申请公布日期
1933.02.09
申请号
GB19320000605
申请日期
1932.01.08
申请人
MALCOLM MCALPINE
发明人
分类号
E21D11/12
主分类号
E21D11/12
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代理人
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