Film sound recorder,申请号US19400358813-传众专利搜索

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发明名称	Film sound recorder
摘要
申请公布号	US2303199(A)	申请公布日期	1942.11.24
申请号	US19400358813	申请日期	1940.09.28
申请人	RADIO CORPORATION	发明人	DIMMICK GLENN L.
分类号	H03G3/20	主分类号	H03G3/20
代理机构		代理人
主权项
地址

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