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发明名称
ARRANGEMENT FOR COOLING BOREHOLE IN DRILLING ROCK FROZEN FOR MANY YEARS
摘要
申请公布号
SU1071011(A1)
申请公布日期
1984.12.07
申请号
SU19823463685
申请日期
1982.07.01
申请人
SUSLOV A.D.,SU;GLUKHOV S.D.,SU;NOVOSELSKIJ YU.A.,SU;MIKHUSHKIN V.N.,SU;YUDIN A.F.,SU
发明人
SUSLOV A.D.,SU;GLUKHOV S.D.,SU;NOVOSELSKIJ YU.A.,SU;MIKHUSHKIN V.N.,SU;YUDIN A.F.,SU
分类号
E21B21/16;E21F3/00;(IPC1-7):E21C7/00
主分类号
E21B21/16
代理机构
代理人
主权项
地址
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