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发明名称
Режущая головка врубовой машины
摘要
申请公布号
SU55218(A1)
申请公布日期
1938.11.30
申请号
SUD55218
申请日期
1938.05.03
申请人
SOTNIKOV YU.P.
发明人
SOTNIKOV YU.P.
分类号
E21C25/40
主分类号
E21C25/40
代理机构
代理人
主权项
地址
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