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发明名称
APPARAT FOR BORING INN I SIDEVEGGEN AV ET BOREHULL
摘要
申请公布号
NO810581(A)
申请公布日期
1981.02.19
申请号
NO19810000581
申请日期
1981.02.19
申请人
STANDARD OIL CO,
发明人
JAGELER, ALFRED H.,;BRODING, ROBERT A.,;KILMER, LAUREN G.,
分类号
E21B;E21B49/06;(IPC1-7):E21B/
主分类号
E21B
代理机构
代理人
主权项
地址
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