Procédé pour la fabrication de barres cylindriques résistant à des efforts de torsion,申请号FRD843768-传众专利搜索

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发明名称	Procédé pour la fabrication de barres cylindriques résistant à des efforts de torsion
摘要
申请公布号	FR843768(A)	申请公布日期	1939.07.10
申请号	FRD843768	申请日期	1938.09.21
申请人		发明人	RENAULT LOUIS
分类号	B21C37/04	主分类号	B21C37/04
代理机构		代理人
主权项
地址

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