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发明名称
AUTOMATIC EXPANDING DAM
摘要
申请公布号
JPS5664013(A)
申请公布日期
1981.06.01
申请号
JP19790140555
申请日期
1979.10.31
申请人
HOKOKU KOGYO
发明人
MATSUSHITA KATSUTERU
分类号
E02B7/20
主分类号
E02B7/20
代理机构
代理人
主权项
地址
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