Apparatus for dishing and perforating sheet metal,申请号US19300457033-传众专利搜索

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发明名称	Apparatus for dishing and perforating sheet metal
摘要
申请公布号	US1959101(A)	申请公布日期	1934.05.15
申请号	US19300457033	申请日期	1930.05.29
申请人	A. O. SMITH CORPORATION	发明人	HASSELQUIST HUGO S.
分类号	B21D22/04	主分类号	B21D22/04
代理机构		代理人
主权项
地址

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