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发明名称
MONITORING DRILL STRING CHARACTERISTICS DURING DRILLING
摘要
申请公布号
IE800742(L)
申请公布日期
1980.10.12
申请号
IE19800000742
申请日期
1980.04.11
申请人
SCHLUMBERGER LTD
发明人
分类号
E21B44/00;E21B47/00;E21B47/024;E21B47/18;(IPC1-7):E21B47/12
主分类号
E21B44/00
代理机构
代理人
主权项
地址
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SCROLL TYPE COMPRESSOR
VIDEO PROJECTOR
