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发明名称
DRILL ADAPTOR
摘要
申请公布号
ZA8305449(B)
申请公布日期
1984.04.25
申请号
ZA19830005449
申请日期
1983.07.26
申请人
COALEQUIP PTY
发明人
DAWE STEPHEN GEORGE;JAMES ATHERTON BREWS
分类号
E21B;E21C
主分类号
E21B
代理机构
代理人
主权项
地址
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