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发明名称
REMOVAL OF UNDERGROUND OBSTRUCTION IN EXCAVATING WORK
摘要
申请公布号
JPH02217589(A)
申请公布日期
1990.08.30
申请号
JP19890038067
申请日期
1989.02.17
申请人
FUDO CONSTR CO LTD
发明人
GOTO AKIO;FUJIMURA KOJI;OKU TOSHIAKI
分类号
F42D3/04;E21D9/06
主分类号
F42D3/04
代理机构
代理人
主权项
地址
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