Recording of electrical impulses,申请号US19370181156-传众专利搜索

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发明名称	Recording of electrical impulses
摘要
申请公布号	US2209664(A)	申请公布日期	1940.07.30
申请号	US19370181156	申请日期	1937.12.22
申请人	RADIO CORPORATION OF AMERICA	发明人	RUNGE FRANK E.
分类号	G11B7/00	主分类号	G11B7/00
代理机构		代理人
主权项
地址

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