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发明名称
摘要
申请公布号
JPS543375(Y2)
申请公布日期
1979.02.16
申请号
JP19740110249U
申请日期
1974.09.12
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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地址
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