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发明名称
DEVICE FOR DAMPING AIR PRESSURE WAVES IN UNDERGROUND MINE WORKING
摘要
申请公布号
SU1513156(A1)
申请公布日期
1989.10.07
申请号
SU19884372652
申请日期
1988.01.27
申请人
KRIVOROZHSKIJ GORNORUDNYJ INSTITUT
发明人
KRIVENKO YURIJ YU,SU;KUCHER VALENTIN M,SU
分类号
E21F11/00
主分类号
E21F11/00
代理机构
代理人
主权项
地址
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