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发明名称
AVFYRINGSHODE
摘要
申请公布号
NO921998(A)
申请公布日期
1992.11.23
申请号
NO19920001998
申请日期
1992.05.21
申请人
DRESSER INDUSTRIES INC
发明人
COLLA, ANTONIO M.
分类号
E21B43/1185;(IPC1-7):E21B43/118
主分类号
E21B43/1185
代理机构
代理人
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地址
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