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发明名称
摘要
申请公布号
JPS5123714(U)
申请公布日期
1976.02.21
申请号
JP19740068943U
申请日期
1974.06.12
申请人
发明人
分类号
F16L21/02;(IPC1-7):F16L21/02
主分类号
F16L21/02
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代理人
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