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发明名称
摘要
申请公布号
JPS5912245(Y2)
申请公布日期
1984.04.13
申请号
JP19780110837U
申请日期
1978.08.11
申请人
发明人
分类号
E01D15/00;E01D15/14;E01D15/24;E01D19/04;(IPC1-7):E01D15/14
主分类号
E01D15/00
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