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发明名称
DRUM-TYPE CUTTING HEAD
摘要
申请公布号
SU1647132(A1)
申请公布日期
1991.05.07
申请号
SU19894695041
申请日期
1989.05.22
申请人
DO POLT INSTITUT
发明人
BOJKO NIKOLAJ G,SU;SHEVTSOV VLADIMIR G,SU;BOLTYAN ANDREJ V,SU;GOROBETS IGOR A,SU;NECHEPAEV VALERIJ G,SU;KAPLIN VLADIMIR A,SU
分类号
E21C25/04
主分类号
E21C25/04
代理机构
代理人
主权项
地址
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