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发明名称
摘要
申请公布号
JPS5250408(Y1)
申请公布日期
1977.11.16
申请号
JP19700115201U
申请日期
1970.11.17
申请人
发明人
分类号
F16L23/02;(IPC1-7):F16L23/02
主分类号
F16L23/02
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代理人
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