Recording and reproducing of electrical impulses,申请号US19330704445-传众专利搜索

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发明名称	Recording and reproducing of electrical impulses
摘要
申请公布号	US2102695(A)	申请公布日期	1937.12.21
申请号	US19330704445	申请日期	1933.12.29
申请人	RADIO CORPORATION	发明人	GIESKIENG MARION W.
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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