Bookholder,申请号US19290339550-传众专利搜索

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发明名称	Bookholder
摘要
申请公布号	US1764325(A)	申请公布日期	1930.06.17
申请号	US19290339550	申请日期	1929.02.13
申请人	EDWIN B. STIMPSON COMPANY	发明人	LUPIEN LOUIS A.
分类号	B42F11/02	主分类号	B42F11/02
代理机构		代理人
主权项
地址

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