Sound record for optic sound reproduction,申请号US19320608104-传众专利搜索

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发明名称	Sound record for optic sound reproduction
摘要
申请公布号	US2018200(A)	申请公布日期	1935.10.22
申请号	US19320608104	申请日期	1932.04.28
申请人	FERNANDO CRUDO	发明人	CRUDO FERNANDO
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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