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发明名称
ROCK DRILL SUPPORTING DEVICES
摘要
申请公布号
AU3202571(A)
申请公布日期
1973.02.08
申请号
AU19710032025
申请日期
1971.08.05
申请人
TOYO KOGYO CO. LTD.
发明人
TORU KAWANO
分类号
(IPC1-7):E21C11/00
主分类号
(IPC1-7):E21C11/00
代理机构
代理人
主权项
地址
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