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发明名称
Borkakslag-skovlhjulinnretning
摘要
申请公布号
NO972800(A)
申请公布日期
1997.12.19
申请号
NO19970002800
申请日期
1997.06.17
申请人
SWIETLIK, GEORGE
发明人
SWIETLIK, GEORGE
分类号
E21B21/00;E21B17/10;(IPC1-7):E21B21/00
主分类号
E21B21/00
代理机构
代理人
主权项
地址
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