Procédé pour faire un trou conique,申请号FR19600847410-传众专利搜索

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发明名称	Procédé pour faire un trou conique
摘要
申请公布号	FR1276417(A)	申请公布日期	1961.11.17
申请号	FR19600847410	申请日期	1960.12.20
申请人	L. SCHULER A. G.	发明人
分类号	B21D28/24;B21J5/10	主分类号	B21D28/24
代理机构		代理人
主权项
地址

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