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经营范围
发明名称
DRILL PIPE HANDLING APPARATUS
摘要
申请公布号
US3513996(A)
申请公布日期
1970.05.26
申请号
USD3513996
申请日期
1968.07.31
申请人
LEE C. MOORE
发明人
HOMER J. WOOLSLAYER;ERWIN A. CAMPBELL
分类号
E21B19/15;(IPC1-7):E21B19/00
主分类号
E21B19/15
代理机构
代理人
主权项
地址
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