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经营范围
发明名称
Steerable burrowing mole
摘要
申请公布号
AU3929193(A)
申请公布日期
1993.10.21
申请号
AU19930039291
申请日期
1993.03.15
申请人
STEER-RITE, LTD.
发明人
CARL J BUMPURS;C. GORDAN BAKER
分类号
E21B7/06;(IPC1-7):E21B7/00
主分类号
E21B7/06
代理机构
代理人
主权项
地址
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