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发明名称
摘要
申请公布号
JPS62143893(U)
申请公布日期
1987.09.10
申请号
JP19860031786U
申请日期
1986.03.05
申请人
发明人
分类号
F16L55/00;F22B37/74;(IPC1-7):F16L55/00
主分类号
F16L55/00
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代理人
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