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经营范围
发明名称
PERCUSSIVE MACHINE
摘要
申请公布号
SU870693(A1)
申请公布日期
1981.10.07
申请号
SU19792800742
申请日期
1979.07.23
申请人
NOVOSIBIRSKIJ ELEKTROTEKHNICHESKIJ INSTITUT
发明人
BRIKMAN ALEKSANDR I,SU;EVGRAFOV VLADIMIR N,SU
分类号
E21B1/30;B25D9/00;(IPC1-7):E21C3/00
主分类号
E21B1/30
代理机构
代理人
主权项
地址
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