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发明名称
PERFORATOR DRILL
摘要
申请公布号
SU989059(A1)
申请公布日期
1983.01.15
申请号
SU19813303038
申请日期
1981.04.03
申请人
KARAGANDINSKIJ POLT INSTITUT
发明人
ESHUTKIN DMITRIJ N,SU;KRETOV BORIS P,SU;KOBYLYANSKIJ VLADIMIR L,SU;KREMER FEDOR F,SU;RYNDIN ALEKSEJ P,SU;CHZHEN ANATOLIJ YA,SU
分类号
E21B1/30;(IPC1-7):E21C3/24
主分类号
E21B1/30
代理机构
代理人
主权项
地址
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