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发明名称
摘要
申请公布号
JPH0616197(Y2)
申请公布日期
1994.04.27
申请号
JP19890059634U
申请日期
1989.05.23
申请人
发明人
分类号
E03C1/086;F16L17/00;(IPC1-7):F16L17/00
主分类号
E03C1/086
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