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发明名称
PROVIDING METHOD AND DEVICE FOR AUTOMATIC DRAIN PIPE FOR EXCESSIVE UNDERGROUND WATER
摘要
申请公布号
JPS55132818(A)
申请公布日期
1980.10.16
申请号
JP19790040365
申请日期
1979.04.05
申请人
WATANABE TSUGUHIKO;WATANABE HIKOITSU
发明人
WATANABE HIKOITSU
分类号
E02D17/20;E02D29/02
主分类号
E02D17/20
代理机构
代理人
主权项
地址
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