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发明名称
Maskin til paafoering av gjengefett paa boreroers skjoetpartier
摘要
申请公布号
NO173893(C)
申请公布日期
1994.02.16
申请号
NO19910004670
申请日期
1991.11.28
申请人
HITEC AS
发明人
GJEDEBO JON;RISA STEINAR
分类号
E21B12/00;F16N;F16N25/04;(IPC1-7):F16N25/04
主分类号
E21B12/00
代理机构
代理人
主权项
地址
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