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发明名称
摘要
申请公布号
JPH0417271(U)
申请公布日期
1992.02.13
申请号
JP19900055996U
申请日期
1990.05.30
申请人
发明人
分类号
F28D20/00;(IPC1-7):F28D20/00
主分类号
F28D20/00
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代理人
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