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发明名称
摘要
申请公布号	FR2033276(A1)	申请公布日期	1970.12.04
申请号	FR19700003425	申请日期	1970.01.30
申请人	DUPONT DE NEMOURS	发明人
分类号	B23K20/08;B32B15/01;F16L13/007;(IPC1-7):B32B15/00;B23P3/00	主分类号	B23K20/08
代理机构		代理人
主权项
地址

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