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经营范围
发明名称
Shielding apparatus
摘要
申请公布号
SG73395(A1)
申请公布日期
2000.06.20
申请号
SG19960005561
申请日期
1993.05.28
申请人
KABUSHIKI KAISHA ISEKI KAIHATSU KOKI
发明人
AKESAKA TOSHIO
分类号
E21D9/06;E21B7/20;E21D9/087;(IPC1-7):E21B7/20;E21D9/08
主分类号
E21D9/06
代理机构
代理人
主权项
地址
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