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发明名称
摘要
申请公布号
JPS53125322(U)
申请公布日期
1978.10.05
申请号
JP19770031771U
申请日期
1977.03.15
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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