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发明名称
EARTH-DRILLING SET
摘要
申请公布号
SU939713(A1)
申请公布日期
1982.06.30
申请号
SU19813240231
申请日期
1981.01.30
申请人
VNII BUROVOJ TEKHNIKI
发明人
VYSOTSKIJ VLADIMIR A,SU;KOROTKOV VLADIMIR P,SU;LEONOV MIKHAIL D,SU;LIBERMAN VLADIMIR I,SU;RYBALKA ANATOLIJ A,SU;RYABCHENKO NIKOLAJ P,SU;SOLODIKHIN EVGENIJ V,SU
分类号
E21B7/28;(IPC1-7):E21B7/28
主分类号
E21B7/28
代理机构
代理人
主权项
地址
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