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发明名称
GEARMEKANISME
摘要
申请公布号
DK615686(A)
申请公布日期
1987.06.28
申请号
DK19860006156
申请日期
1986.12.19
申请人
HUGHES TOOL COMPANY
发明人
EPPINK, JAY MILTON
分类号
E21B4/02;F04C2/107;(IPC1-7):F04C2/107
主分类号
E21B4/02
代理机构
代理人
主权项
地址
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