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发明名称
摘要
申请公布号
JPS5526251(B2)
申请公布日期
1980.07.11
申请号
JP19760102850
申请日期
1976.08.28
申请人
发明人
分类号
E02B7/36;E02B7/22;E02B8/04;F16K31/14;F16K31/163
主分类号
E02B7/36
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代理人
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