Apparatus for and method of photographically recording sounds,申请号US19280266475-传众专利搜索

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发明名称	Apparatus for and method of photographically recording sounds
摘要
申请公布号	US1759580(A)	申请公布日期	1930.05.20
申请号	US19280266475	申请日期	1928.04.02
申请人	BERNARD KWARTIN	发明人	KWARTIN BERNARD
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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