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发明名称
MEKANISK SLAGSAKS.
摘要
申请公布号
NO823536(A)
申请公布日期
1983.04.29
申请号
NO19820003536
申请日期
1982.10.25
申请人
CHRISTENSEN, INC.,
发明人
KREHL, DIETMAR,;JUERGENS, RAINER,
分类号
E21B11/02;E21B31/107;(IPC1-7):E21B/
主分类号
E21B11/02
代理机构
代理人
主权项
地址
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