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发明名称
摘要
申请公布号
JPS57115480(U)
申请公布日期
1982.07.17
申请号
JP19810002956U
申请日期
1981.01.12
申请人
发明人
分类号
F16L23/16;F16L23/02;F16L25/02;(IPC1-7):F16L25/02
主分类号
F16L23/16
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代理人
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