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发明名称
DRILLING APPARATUS
摘要
申请公布号
CA2068005(A1)
申请公布日期
1992.11.07
申请号
CA19922068005
申请日期
1992.05.05
申请人
WAVE TEC GES.M.B.H
发明人
AWDUJEWSKI, WSEWOLOD S.;GANIJEW, RIFNER W.;MUFASALOW, ROBERT S.;SACHAROW, JURIJ P.
分类号
E21B7/18;E21B7/24;E21B10/18;E21B10/60;(IPC1-7):E21B10/18
主分类号
E21B7/18
代理机构
代理人
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