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发明名称	SUCTION-TUBE DREDGE
摘要
申请公布号	SU1751270(A1)	申请公布日期	1992.07.30
申请号	SU19894770278	申请日期	1989.12.19
申请人	KRYUCHKOV OLEG S,SU	发明人	KRYUCHKOV OLEG S,SU
分类号	E02F3/88	主分类号	E02F3/88
代理机构		代理人
主权项
地址

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