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发明名称	PIT PROP HEAD
摘要
申请公布号	SU857493(A1)	申请公布日期	1981.08.23
申请号	SU19762373079	申请日期	1976.06.14
申请人	GUSAR NIKOLAJ N,SU;KASYANOV VLADIMIR F,SU;MESHKOV VADIM A,SU;SHESTOV PETR ,SU	发明人	GUSAR NIKOLAJ N,SU;KASYANOV VLADIMIR F,SU;MESHKOV VADIM A,SU;SHESTOV PETR 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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