Improvements in means for flanging circular openings in sheet metal blanks,申请号GB19370016786-传众专利搜索

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发明名称	Improvements in means for flanging circular openings in sheet metal blanks
摘要
申请公布号	GB497428(A)	申请公布日期	1938.12.16
申请号	GB19370016786	申请日期	1937.06.16
申请人	L. SCHULER, A.G.;MATTHAEUS WIEST	发明人
分类号	B21D19/04	主分类号	B21D19/04
代理机构		代理人
主权项
地址

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