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发明名称
摘要
申请公布号
JPS5858191(U)
申请公布日期
1983.04.20
申请号
JP19810154328U
申请日期
1981.10.16
申请人
发明人
分类号
F16L57/00;(IPC1-7):F16L57/00
主分类号
F16L57/00
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