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发明名称
Mechanical actuator mechanism
摘要
申请公布号
GB2216625(A)
申请公布日期
1989.10.11
申请号
GB19890004521
申请日期
1989.02.28
申请人
* THE BRITISH PETROLEUM COMPANY P.L.C.
发明人
HANS PAUL * HOPPER
分类号
E21B33/035;F16H25/20
主分类号
E21B33/035
代理机构
代理人
主权项
地址
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