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发明名称
AIR-POWERED MINING STRUT
摘要
申请公布号
SU977801(A1)
申请公布日期
1982.11.30
申请号
SU19813265321
申请日期
1981.06.25
申请人
TEREKHIN IGOR,SU
发明人
TEREKHIN IGOR I,SU
分类号
E21D15/44;(IPC1-7):E21D15/44
主分类号
E21D15/44
代理机构
代理人
主权项
地址
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