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发明名称
COVER OF POWERED SUPPORT SECTION
摘要
申请公布号
SU1689641(A1)
申请公布日期
1991.11.07
申请号
SU19894747039
申请日期
1989.10.09
申请人
PODMOSKOVNYJ NI PK UGOLNYJ INSTITUT
发明人
ARKHIPENKOV ALEKSANDR T,SU;POTAPENKO VYACHESLAV A,SU;KAZAK YURIJ N,SU;KURAKIN ALEKSANDR I,SU;POTAPOVA GALINA B,SU
分类号
E21D23/06
主分类号
E21D23/06
代理机构
代理人
主权项
地址
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