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经营范围
发明名称
ROOF BOLT FOR SUPPORTING MINE WORKINGS
摘要
申请公布号
SU991066(A1)
申请公布日期
1983.01.23
申请号
SU19802970478
申请日期
1980.08.05
申请人
VNI PK UGOLNYJ I "KNIUI"
发明人
DIK YAKOV G,SU;PROKHOROVSKIJ VLADIMIR A,SU;KEJROVICH EVGENIJ N,SU;LIGAJ GENNADIJ A,SU
分类号
E21D21/00;(IPC1-7):E21D21/00
主分类号
E21D21/00
代理机构
代理人
主权项
地址
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