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发明名称
Dam construction
摘要
申请公布号
US1807358(A)
申请公布日期
1931.05.26
申请号
US19280282060
申请日期
1928.06.01
申请人
OSCAR WARTEMANN
发明人
WARTEMANN OSCAR
分类号
E02B7/14
主分类号
E02B7/14
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代理人
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