Procédé et dispositif pour la fabrication de tubes ou tuyaux sans fin rainurés en spirale,申请号FRD727171-传众专利搜索

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发明名称	Procédé et dispositif pour la fabrication de tubes ou tuyaux sans fin rainurés en spirale
摘要
申请公布号	FR727171(A)	申请公布日期	1932.06.14
申请号	FRD727171	申请日期	1931.11.07
申请人		发明人	KOPETZ JOSEF
分类号	B21C37/12	主分类号	B21C37/12
代理机构		代理人
主权项
地址

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