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发明名称
Hole measuring devices
摘要
申请公布号
US3251136(A)
申请公布日期
1966.05.17
申请号
US19640340043
申请日期
1964.01.24
申请人
THE ENGLISH ELECTRIC COMPANY LIMITED
发明人
TYRRELL JOSEPH FRANCIS;JANKO AMBRUS
分类号
E21B47/08;G01B5/12;G21C17/10
主分类号
E21B47/08
代理机构
代理人
主权项
地址
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