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发明名称
BROENNANORDNING.
摘要
申请公布号
NO861771(A)
申请公布日期
1986.11.07
申请号
NO19860001771
申请日期
1986.05.05
申请人
AVA INTERNATIONAL CORP
发明人
AKKERMAN, NEIL HOOVER
分类号
E21B23/02;(IPC1-7):E21B/
主分类号
E21B23/02
代理机构
代理人
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地址
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