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发明名称
摘要
申请公布号
JPS5348324(Y2)
申请公布日期
1978.11.18
申请号
JP19740137081U
申请日期
1974.11.14
申请人
发明人
分类号
F16L21/04;F16L21/08;(IPC1-7):F16L21/04
主分类号
F16L21/04
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