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发明名称
ROCK DRILL
摘要
申请公布号
ZA8003431(B)
申请公布日期
1981.05.27
申请号
ZA19800003431
申请日期
1980.06.09
申请人
CHAMBER OF MINES SERVICES LTD
发明人
KRASNOFF E
分类号
B21C
主分类号
B21C
代理机构
代理人
主权项
地址
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