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经营范围
发明名称
WELL DRILLING APPARATUS
摘要
申请公布号
PL253442(A1)
申请公布日期
1986.11.18
申请号
PL19850253442
申请日期
1985.05.17
申请人
UNIV WARSZAWSKI
发明人
CEGIELSKI JERZY
分类号
E03B3/12;E21B;E21B43/00;(IPC1-7):E21B/
主分类号
E03B3/12
代理机构
代理人
主权项
地址
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