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发明名称
摘要
申请公布号
JPS4713712(U)
申请公布日期
1972.10.18
申请号
JP19710016472U
申请日期
1971.03.15
申请人
发明人
分类号
F16L11/12;F16L9/18;(IPC1-7):F16L9/18
主分类号
F16L11/12
代理机构
代理人
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