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发明名称
摘要
申请公布号
JPH0317182(U)
申请公布日期
1991.02.20
申请号
JP19900033210U
申请日期
1990.03.29
申请人
发明人
分类号
F04B17/04;(IPC1-7):F04B17/04
主分类号
F04B17/04
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