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发明名称
CHUCK FOR CONNECTING AUGERS WITH ROTATOR
摘要
申请公布号
SU1689606(A1)
申请公布日期
1991.11.07
申请号
SU19894677300
申请日期
1989.04.11
申请人
RESHETNIKOV VLADIMIR P,SU;KOVALCHUK GRIGORIJ M,SU;PENYAK YAROSLAV N,SU
发明人
RESHETNIKOV VLADIMIR P,SU;KOVALCHUK GRIGORIJ M,SU;PENYAK YAROSLAV N,SU
分类号
E21B17/03
主分类号
E21B17/03
代理机构
代理人
主权项
地址
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