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发明名称
PACKAGE METAL SUPPORT
摘要
申请公布号
SU1677328(A1)
申请公布日期
1991.09.15
申请号
SU19894685935
申请日期
1989.03.23
申请人
PROIZV OB PO DOBYCHE UGLYA "SEVEROKUZBASSUGOL"
发明人
KONDRATEV SERGEJ V,SU
分类号
E21D11/14
主分类号
E21D11/14
代理机构
代理人
主权项
地址
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