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发明名称
摘要
申请公布号
JP2540563(Y2)
申请公布日期
1997.07.09
申请号
JP19910048312U
申请日期
1991.05.29
申请人
发明人
分类号
F16L21/08;F16L37/12;(IPC1-7):F16L37/12
主分类号
F16L21/08
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