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发明名称
Perfurador de solo
摘要
申请公布号
BR7702292(U)
申请公布日期
1999.06.08
申请号
BR1997MU02292U
申请日期
1997.10.13
申请人
FRANCO DE SOUZA NELSON
发明人
DE SOUZA NELSON FRANCO
分类号
E21B3/00;(IPC1-7):E21B3/00
主分类号
E21B3/00
代理机构
代理人
主权项
地址
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