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发明名称
ROTOR FUER EINE KRAFTBETAETIGTE ZANGE
摘要
申请公布号
DE69210814(D1)
申请公布日期
1996.06.20
申请号
DE19926010814
申请日期
1992.03.23
申请人
WEATHERFORD/LAMB, INC. (N.D.GES.D. STAATES DELAWARE), HOUSTON, TEX., US
发明人
PIETRAS, BERND-GEORG, D-3002 WEDEMARK 2, DE
分类号
E21B19/16;(IPC1-7):E21B19/16
主分类号
E21B19/16
代理机构
代理人
主权项
地址
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