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经营范围
发明名称
TUNNEL EXCAVATOR
摘要
申请公布号
JPH03110291(A)
申请公布日期
1991.05.10
申请号
JP19890247343
申请日期
1989.09.21
申请人
KOTOBUKI GIKEN KOGYO KK
发明人
ABE MASAZUMI
分类号
E21B7/02;E21B15/00;E21B19/08
主分类号
E21B7/02
代理机构
代理人
主权项
地址
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