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发明名称
摘要
申请公布号
JPH048869(U)
申请公布日期
1992.01.27
申请号
JP19900049845U
申请日期
1990.05.15
申请人
发明人
分类号
G21D1/02;F16J15/40;(IPC1-7):F16J15/40
主分类号
G21D1/02
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