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经营范围
发明名称
DRILLING EQUIPMENT
摘要
申请公布号
ZA8101556(B)
申请公布日期
1982.03.31
申请号
ZA19810001556
申请日期
1981.03.09
申请人
G F DIAMOND DRILLING;DEVELOPMENT CO LTD
发明人
MONTGOMERY W
分类号
B25D;E21B;E21C
主分类号
B25D
代理机构
代理人
主权项
地址
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