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发明名称
摘要
申请公布号
JPS5475569(U)
申请公布日期
1979.05.29
申请号
JP19770150393U
申请日期
1977.11.08
申请人
发明人
分类号
F16L27/08;C02F1/00;C02F3/20;(IPC1-7):C02C1/02;C02C1/12;C02B9/00
主分类号
F16L27/08
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代理人
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