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发明名称
摘要
申请公布号
JPS5550459(Y2)
申请公布日期
1980.11.25
申请号
JP19750129692U
申请日期
1975.09.20
申请人
发明人
分类号
F16L21/08;(IPC1-7):F16L21/08
主分类号
F16L21/08
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代理人
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