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发明名称
Rotary percussive core drill bit
摘要
申请公布号
AU6419594(A)
申请公布日期
1994.10.24
申请号
AU19940064195
申请日期
1994.04.05
申请人
SDS PTY LTD
发明人
ROGER ARTHUR CROCKER;FREDERICK GRAHAM MOIR
分类号
E21B10/02;E21B10/36
主分类号
E21B10/02
代理机构
代理人
主权项
地址
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