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发明名称
摘要
申请公布号
JPS5411562(U)
申请公布日期
1979.01.25
申请号
JP19770085215U
申请日期
1977.06.27
申请人
发明人
分类号
F16L3/00;C02F3/20;F16L3/04;H01F1/00;(IPC1-7):C02C1/12;C02B1/00
主分类号
F16L3/00
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代理人
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