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发明名称
TRACER METHOD AND APPARATUS
摘要
申请公布号
EP1991759(A1)
申请公布日期
2008.11.19
申请号
EP20070712982
申请日期
2007.03.05
申请人
JOHNSON MATTHEY PLC
发明人
GREEN, DARRELL;STUBBS, DAVID
分类号
E21B43/117;E21B47/10
主分类号
E21B43/117
代理机构
代理人
主权项
地址
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