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发明名称
摘要
申请公布号
JPS5712889(U)
申请公布日期
1982.01.22
申请号
JP19800090846U
申请日期
1980.06.27
申请人
发明人
分类号
F16L21/08;(IPC1-7):F16L21/08
主分类号
F16L21/08
代理机构
代理人
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地址
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