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发明名称
摘要
申请公布号
JPS5632704(Y2)
申请公布日期
1981.08.03
申请号
JP19750162670U
申请日期
1975.11.30
申请人
发明人
分类号
F16L3/22;F16L3/223;F16L3/24;(IPC1-7):F16L3/22
主分类号
F16L3/22
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代理人
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