Record controlling means,申请号US19290361638-传众专利搜索

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发明名称	Record controlling means
摘要
申请公布号	US2009806(A)	申请公布日期	1935.07.30
申请号	US19290361638	申请日期	1929.05.09
申请人	JOHNSTON EDWARD A	发明人	JOHNSTON EDWARD A.
分类号	G11B17/00	主分类号	G11B17/00
代理机构		代理人
主权项
地址

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