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经营范围
发明名称
AUGER CLEANER
摘要
申请公布号
EP0427454(B1)
申请公布日期
1993.08.04
申请号
EP19900311949
申请日期
1990.11.01
申请人
DAWSON CONSTRUCTION PLANT LIMITED
发明人
FLINT, BRIAN
分类号
E21B12/06
主分类号
E21B12/06
代理机构
代理人
主权项
地址
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