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发明名称
Устройство для измерения скорости бурения
摘要
申请公布号
SU132584(A1)
申请公布日期
1960.11.30
申请号
SU19600652300
申请日期
1960.01.28
申请人
PORTER L.G.
发明人
PORTER L.G.
分类号
E21B45/00
主分类号
E21B45/00
代理机构
代理人
主权项
地址
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