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发明名称
摘要
申请公布号
JPS5289828(U)
申请公布日期
1977.07.05
申请号
JP19750176256U
申请日期
1975.12.27
申请人
发明人
分类号
E01D19/04;E01D101/00;E04B1/36;(IPC1-7):E01D19/04
主分类号
E01D19/04
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