Clasps for file cards and the like,申请号US19600016481-传众专利搜索

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发明名称	Clasps for file cards and the like
摘要
申请公布号	US3081775(A)	申请公布日期	1963.03.19
申请号	US19600016481	申请日期	1960.03.21
申请人	DETWILER VINTON V	发明人	DETWILER VINTON V.
分类号	B42F17/02	主分类号	B42F17/02
代理机构		代理人
主权项
地址

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