METHOD OF HELICAL EXPANDING OF TUBES,申请号SU19792747766-传众专利搜索

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发明名称	METHOD OF HELICAL EXPANDING OF TUBES
摘要
申请公布号	SU772621(A1)	申请公布日期	1980.10.23
申请号	SU19792747766	申请日期	1979.04.06
申请人	DN METALL INSTITUT	发明人	DRUYAN VLADIMIR M,SU;MILOV GRIGORIJ ,SU;BALAKIN VALERIJ F,SU;GULYAEV YURIJ G,SU
分类号	B21B19/06;(IPC1-7):B21B19/06	主分类号	B21B19/06
代理机构		代理人
主权项
地址

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