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发明名称
PERFORATOR
摘要
申请公布号
SU1710719(A1)
申请公布日期
1992.02.07
申请号
SU19904820446
申请日期
1990.04.28
申请人
MOLODEZHNYJ N-PROIZV KOMPLEKS "YUNITEMP"
发明人
TUNKEL ROMAN N,SU
分类号
E21B6/06;E21B1/30
主分类号
E21B6/06
代理机构
代理人
主权项
地址
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