Yielding retainer for visible index card holders,申请号US19300463917-传众专利搜索

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发明名称	Yielding retainer for visible index card holders
摘要
申请公布号	US1816635(A)	申请公布日期	1931.07.28
申请号	US19300463917	申请日期	1930.06.26
申请人	THE YAWMAN & ERBE MANUFACTURING COMPANY	发明人	CLARK JAMES R.
分类号	B42F17/18	主分类号	B42F17/18
代理机构		代理人
主权项
地址

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