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发明名称
REDUNDANT DRAWWORKS
摘要
申请公布号
EP0925253(A1)
申请公布日期
1999.06.30
申请号
EP19970936512
申请日期
1997.08.18
申请人
CONTINENTAL EMSCO COMPANY
发明人
DYER, NORMAN, D.;KONDO, KENNETH, S.
分类号
B66D1/54;E21B19/00;(IPC1-7):B66D1/54;E21B19/08
主分类号
B66D1/54
代理机构
代理人
主权项
地址
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