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发明名称
IMMERSION OF DEPARTURE SHAFT USING EXCAVATOR PROVIDED JUXTAPOSEDLY WITH AGITATING BLADE, AND CONNECTING METHOD TO BURIED SEWER MAIN
摘要
申请公布号
JPH10317866(A)
申请公布日期
1998.12.02
申请号
JP19970160373
申请日期
1997.05.14
申请人
MITSUI SHINICHI
发明人
MITSUI SHINICHI
分类号
E21B7/20;E03F3/06;E21D1/00;E21D5/10;E21D9/08;(IPC1-7):E21B7/20
主分类号
E21B7/20
代理机构
代理人
主权项
地址
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