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经营范围
发明名称
AIR DUCT CLOSING DEVICE
摘要
申请公布号
SU589426(A1)
申请公布日期
1978.01.25
申请号
SU19742021357
申请日期
1974.04.29
申请人
DO G PK EXI KOMPLEKSNOJ MEKH SHAKHT
发明人
TERESHKOV VIKTOR D,SU;LYUTOV YURIJ D,SU;DUDKIN VIKTOR E,SU
分类号
E21F1/10;(IPC1-7):E21F1/10
主分类号
E21F1/10
代理机构
代理人
主权项
地址
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