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发明名称
WARNING DEVICE TO PREVENT CLUTCH BURNING ON A WELL SERVICE RIG
摘要
申请公布号
CA2515315(A1)
申请公布日期
2004.09.02
申请号
CA20042515315
申请日期
2004.02.13
申请人
KEY ENERGY SERVICES, INC.
发明人
NORTHCUTT, KEVIN;NEWMAN, FREDERIC M.
分类号
B66D1/48;E21B41/00;(IPC1-7):E21B44/00
主分类号
B66D1/48
代理机构
代理人
主权项
地址
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