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发明名称
摘要
申请公布号
JPS4630341(Y1)
申请公布日期
1971.10.20
申请号
JP19660051899U
申请日期
1966.06.04
申请人
发明人
分类号
(IPC1-7):E21C29/22;B60K17/10;E02F7/00;E21D9/10
主分类号
(IPC1-7):E21C29/22
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