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发明名称
ROCK BORING MACHINE-CASE B
摘要
申请公布号
ZA7607337(B)
申请公布日期
1978.05.30
申请号
ZA19760007337
申请日期
1976.12.09
申请人
BOART INT LTD
发明人
POPE N;ADAMSON M
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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