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发明名称
METHOD OF MECHANIZED DRIVING OF OFFSETS IN THE UTILITY MINERALS
摘要
申请公布号
CS201149(B1)
申请公布日期
1980.10.31
申请号
CS19770005784
申请日期
1977.09.06
申请人
MRAZEK,OLDRICH,CS;CHOVANEC,JIRI,CS;KOLAR,JOSEF,CS
发明人
MRAZEK,OLDRICH,CS;CHOVANEC,JIRI,CS;KOLAR,JOSEF,CS
分类号
E21D9/02;(IPC1-7):E21D9/02
主分类号
E21D9/02
代理机构
代理人
主权项
地址
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