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发明名称
摘要
申请公布号
JPS6123757(Y2)
申请公布日期
1986.07.16
申请号
JP19780116446U
申请日期
1978.08.25
申请人
发明人
分类号
F16L55/07;B21D28/28;(IPC1-7):F16L55/07
主分类号
F16L55/07
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代理人
主权项
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