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发明名称
DRILL FOR DEEP DRILLING
摘要
申请公布号
SU837604(A1)
申请公布日期
1981.06.15
申请号
SU19792740442
申请日期
1979.03.23
申请人
OD POLT INSTITUT
发明人
PETROSYAN GEORGIJ M,SU;AJRIKYAN ARMEN L,SU;ASTAKHOV VIKTOR P,SU
分类号
B23B51/06;(IPC1-7):B23B51/06
主分类号
B23B51/06
代理机构
代理人
主权项
地址
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