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发明名称
摘要
申请公布号
JPS5211686(U)
申请公布日期
1977.01.27
申请号
JP19750097973U
申请日期
1975.07.15
申请人
发明人
分类号
E04G21/16;B25C1/14;(IPC1-7):E04G21/16
主分类号
E04G21/16
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