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经营范围
发明名称
COLUMN PNEUMATIC-PERCUSSION DRILL
摘要
申请公布号
SU564418(A1)
申请公布日期
1977.07.05
申请号
SU19762342113
申请日期
1976.03.04
申请人
SHIROKONOSOV PAVEL A,SU;ROZIN MIKHAIL M,SU
发明人
SHIROKONOSOV PAVEL A,SU;ROZIN MIKHAIL M,SU
分类号
E21B25/00;(IPC1-7):E21C13/12;E21C3/24
主分类号
E21B25/00
代理机构
代理人
主权项
地址
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