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经营范围
发明名称
RAM BORING MACHINE
摘要
申请公布号
JPH02108786(A)
申请公布日期
1990.04.20
申请号
JP19890162464
申请日期
1989.06.23
申请人
PAURU SHIYUMITSUTO
发明人
ARUFUONSU HETSUSE
分类号
E21B11/02;E21B4/14
主分类号
E21B11/02
代理机构
代理人
主权项
地址
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