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发明名称
Arch dam
摘要
申请公布号
US2631434(A)
申请公布日期
1953.03.17
申请号
US19500164962
申请日期
1950.05.29
申请人
ULRICH FINSTERWALDER
发明人
FINSTERWALDER ULRICH
分类号
E02B7/14
主分类号
E02B7/14
代理机构
代理人
主权项
地址
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