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经营范围
发明名称
EXCAVATION HEAD DEVICE
摘要
申请公布号
JPS62133285(A)
申请公布日期
1987.06.16
申请号
JP19850274755
申请日期
1985.12.06
申请人
SHIMIZU CONSTR CO LTD
发明人
NAGARE TARO;ISHII TAKU;OBARA YOSHIYUKI;ARAI HISAO
分类号
E21D1/06;E21B10/00;E21B10/60;E21D9/10
主分类号
E21D1/06
代理机构
代理人
主权项
地址
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