Cold widening and stretching of pipe joint,申请号FR19690029719-传众专利搜索

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发明名称	Cold widening and stretching of pipe joint
摘要
申请公布号	FR2017091(A1)	申请公布日期	1970.05.15
申请号	FR19690029719	申请日期	1969.08.29
申请人	VAN KLEEF GERARD NV	发明人
分类号	B21D41/02;(IPC1-7):21D39/00;21D41/00	主分类号	B21D41/02
代理机构		代理人
主权项
地址

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