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发明名称
摘要
申请公布号
JPH0314632(Y2)
申请公布日期
1991.04.02
申请号
JP19870160419U
申请日期
1987.10.19
申请人
发明人
分类号
F16L17/00;F16L37/00;F16L37/12;(IPC1-7):F16L37/12
主分类号
F16L17/00
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