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发明名称
Water supply and drainage system for fishlocks
摘要
申请公布号
US2125311(A)
申请公布日期
1938.08.02
申请号
US19370144612
申请日期
1937.05.25
申请人
PETERSON BEN L
发明人
PETERSON BEN L.
分类号
E02B8/08
主分类号
E02B8/08
代理机构
代理人
主权项
地址
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