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发明名称
摘要
申请公布号
JPH0280175(U)
申请公布日期
1990.06.20
申请号
JP19880158676U
申请日期
1988.12.05
申请人
发明人
分类号
E03D3/04;F16K47/02;(IPC1-7):E03D3/04
主分类号
E03D3/04
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