Needle guide for records,申请号US19290412185-传众专利搜索

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发明名称	Needle guide for records
摘要
申请公布号	US1859153(A)	申请公布日期	1932.05.17
申请号	US19290412185	申请日期	1929.12.06
申请人	O'LEARY JOHN S	发明人	O'LEARY JOHN S.
分类号	G11B3/70	主分类号	G11B3/70
代理机构		代理人
主权项
地址

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