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发明名称
ANORDNING VED BOREUTSTYR
摘要
申请公布号
NO149180(B)
申请公布日期
1983.11.21
申请号
NO19770004351
申请日期
1977.12.16
申请人
LOEFS VERKSTADS AB,
发明人
LOEF, STIG UNO,
分类号
E21B;E21B7/00;E21B7/20;(IPC1-7):E21B7/20
主分类号
E21B
代理机构
代理人
主权项
地址
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