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发明名称
摘要
申请公布号
JPS6113837(Y2)
申请公布日期
1986.04.28
申请号
JP19810019565U
申请日期
1981.02.14
申请人
发明人
分类号
F16L21/04;F16L21/08;(IPC1-7):F16L21/08
主分类号
F16L21/04
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