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发明名称
MOTION DETENT ARRANGEMENT
摘要
申请公布号
GB8803173(D0)
申请公布日期
1988.03.09
申请号
GB19880003173
申请日期
1988.02.11
申请人
FERRANTI PLC
发明人
分类号
E21B33/035;E21B33/038;F16B1/00;F16B21/16;G05G5/18
主分类号
E21B33/035
代理机构
代理人
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