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发明名称
HOLE EXCAVATOR USING AUGER ROTATING ON VERTICAL SHAFT
摘要
申请公布号
JPS56128896(A)
申请公布日期
1981.10.08
申请号
JP19800033107
申请日期
1980.03.15
申请人
SAITO SHIGENORI
发明人
SAITOU SHIGENORI
分类号
E21B3/02
主分类号
E21B3/02
代理机构
代理人
主权项
地址
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