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发明名称
Drill discharge apparatus
摘要
申请公布号
AU1863097(A)
申请公布日期
1997.09.22
申请号
AU19970018630
申请日期
1997.03.06
申请人
GEORGE MICHAEL RICHMOND DOBSON;AUSTIN JAMES DOBSON
发明人
GEORGE MICHAEL RICHMOND DOBSON;AUSTIN JAMES DOBSON
分类号
E21B12/00
主分类号
E21B12/00
代理机构
代理人
主权项
地址
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