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发明名称
摘要
申请公布号
JPS6445087(U)
申请公布日期
1989.03.17
申请号
JP19870140572U
申请日期
1987.09.14
申请人
发明人
分类号
F16L33/22;(IPC1-7):F16L33/22
主分类号
F16L33/22
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