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发明名称
YIELDABLE ROOF BOLT
摘要
申请公布号
SU1753955(A3)
申请公布日期
1992.08.07
申请号
SU19904858261
申请日期
1990.06.25
申请人
KUZIN GENNADIJ S,SU;BASTRYGIN YURIJ N,SU;KHLOPOTOV VIKTOR E,SU
发明人
KUZIN GENNADIJ S,SU;BASTRYGIN YURIJ N,SU;KHLOPOTOV VIKTOR E,SU
分类号
E21D21/00
主分类号
E21D21/00
代理机构
代理人
主权项
地址
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