Perfectionnements apportés aux procédés et machines pour fabriquer des objets creux en métal,申请号FRD953047-传众专利搜索

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发明名称	Perfectionnements apportés aux procédés et machines pour fabriquer des objets creux en métal
摘要
申请公布号	FR953047(A)	申请公布日期	1949.11.29
申请号	FRD953047	申请日期	1946.10.25
申请人		发明人	KELLER JAKOB
分类号	B21D22/28	主分类号	B21D22/28
代理机构		代理人
主权项
地址

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