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发明名称
摘要
申请公布号
JPS4516764(Y1)
申请公布日期
1970.07.10
申请号
JP19660064465U
申请日期
1966.07.08
申请人
发明人
分类号
(IPC1-7):E21D9/06
主分类号
(IPC1-7):E21D9/06
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