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发明名称
Automatic dam
摘要
申请公布号
US2696713(A)
申请公布日期
1954.12.14
申请号
US19500186091
申请日期
1950.09.21
申请人
BENTRUP HENRY D
发明人
BENTRUP HENRY D.
分类号
E02B13/02
主分类号
E02B13/02
代理机构
代理人
主权项
地址
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