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发明名称
Apparatus for altering the position of fishway portals
摘要
申请公布号
US2125962(A)
申请公布日期
1938.08.09
申请号
US19370144613
申请日期
1937.05.25
申请人
SHOEMAKER GLEN W
发明人
SHOEMAKER GLEN W.
分类号
E02B8/08
主分类号
E02B8/08
代理机构
代理人
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地址
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