Perfectionnement aux joints de liège,申请号FRD979304-传众专利搜索

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发明名称	Perfectionnement aux joints de liège
摘要
申请公布号	FR979304(A)	申请公布日期	1951.04.25
申请号	FRD979304	申请日期	1949.01.20
申请人	J. DUBOIS ET FILS	发明人
分类号	B27J5/00	主分类号	B27J5/00
代理机构		代理人
主权项
地址

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