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发明名称
Fishway
摘要
申请公布号
US2168341(A)
申请公布日期
1939.08.08
申请号
US19380193292
申请日期
1938.03.01
申请人
UNITED STATES OF AMERICA
发明人
HOLMES HARLAN B.;BLOOD HENRY F.;BELL MILO C.
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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