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发明名称	CLAMSHELL
摘要
申请公布号	SU1696663(A1)	申请公布日期	1991.12.07
申请号	SU19884643045	申请日期	1988.12.26
申请人	MO AVTOMOBILNO-DOROZHNYJ IVNII TRANSPORTNOGO STROITELSTVA	发明人	KARASEV GENNADIJ N,SU;DIANOV KHARIS A,SU
分类号	E21B7/28	主分类号	E21B7/28
代理机构		代理人
主权项
地址

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