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发明名称
摘要
申请公布号
JPS56171488(U)
申请公布日期
1981.12.18
申请号
JP19800070731U
申请日期
1980.05.21
申请人
发明人
分类号
F16L19/08;F16L19/00;(IPC1-7):F16L19/00
主分类号
F16L19/08
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