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发明名称
MINE ROOF SUPPORT SAFETY VALVE
摘要
申请公布号
SU599089(A1)
申请公布日期
1978.03.25
申请号
SU19762420632
申请日期
1976.11.15
申请人
KARAGANDINSKOE OB PO PROIZV GORNOSHAKHTNOGO OBORUDOVANIYA
发明人
BRONFEN PETR MARKOVICH,SU;YAKOVLEV VITALIJ ILICH,SU;KHOKHLOV YURIJ MIKHAJLOVICH,SU;FIRSTOV VLADISLAV DMITRIEVICH,SU
分类号
E21D23/16;F16K17/00;(IPC1-7):E21D23/16
主分类号
E21D23/16
代理机构
代理人
主权项
地址
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