Sign holding device,申请号US19330687567-传众专利搜索

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发明名称	Sign holding device
摘要
申请公布号	US1968219(A)	申请公布日期	1934.07.31
申请号	US19330687567	申请日期	1933.08.31
申请人	PFAFF JR HENRY C	发明人	JR. HENRY C. PFAFF,
分类号	G09F7/18	主分类号	G09F7/18
代理机构		代理人
主权项
地址

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