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发明名称	SLEEPER
摘要
申请公布号	SU727156(A3)	申请公布日期	1980.04.05
申请号	SU19782570047	申请日期	1978.01.20
申请人	YURGEN FRENTSEL,DT	发明人	YURGEN FRENTSEL,DT
分类号	E01B3/00;E01B;(IPC1-7):E01B3/00	主分类号	E01B3/00
代理机构		代理人
主权项
地址

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