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发明名称
HEAD FOR ANNULAR DRILLING
摘要
申请公布号
SU1234064(A1)
申请公布日期
1986.05.30
申请号
SU19843783933
申请日期
1984.08.25
申请人
OD POLT I;CHERNOMORSKOE REVOLYUTSII MORSKOE PAROKHODSTVO
发明人
KRASILNIKOV ALEKSANDR M,SU;SIDORIN VALERIJ M,SU;VAKHRAMEEV YURIJ Z,SU;ROLINSKIJ VLADIMIR I,SU;ZHAJVORONOK ALEKSANDR D,SU;NIKIFOROV YURIJ A,SU;PIDRUCHNAYA LIDIYA T,SU
分类号
B23B51/02;B23B51/04;(IPC1-7):B23B51/02
主分类号
B23B51/02
代理机构
代理人
主权项
地址
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