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发明名称
BORING APPARATUS
摘要
申请公布号
JPS57165590(A)
申请公布日期
1982.10.12
申请号
JP19810049079
申请日期
1981.03.31
申请人
YOSHIMURA KOGYOSHO:KK
发明人
YOSHIMURA NOBUO
分类号
E21B7/136;E21B7/12
主分类号
E21B7/136
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代理人
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