Perforated foldable sheet,申请号US19410390070-传众专利搜索

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发明名称	Perforated foldable sheet
摘要
申请公布号	US2304219(A)	申请公布日期	1942.12.08
申请号	US19410390070	申请日期	1941.04.24
申请人	WAGNER MELVIN F	发明人	WAGNER MELVIN F.
分类号	G06K19/02	主分类号	G06K19/02
代理机构		代理人
主权项
地址

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