Sound reproducing mechanism,申请号US19350012480-传众专利搜索

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发明名称	Sound reproducing mechanism
摘要
申请公布号	US2124673(A)	申请公布日期	1938.07.26
申请号	US19350012480	申请日期	1935.03.22
申请人	JOHN PUMA	发明人	PUMA JOHN
分类号	G06K7/00;G06K7/14;G11B3/36;G11B25/04	主分类号	G06K7/00
代理机构		代理人
主权项
地址

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