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发明名称
摘要
申请公布号
JPS5040249(B1)
申请公布日期
1975.12.23
申请号
JP19700039925
申请日期
1970.05.11
申请人
发明人
分类号
F16L1/00;F17D1/00;(IPC1-7):F17D1/00
主分类号
F16L1/00
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