Audible reading apparatus,申请号US19400342637-传众专利搜索

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法人/股东/高管

发明名称	Audible reading apparatus
摘要
申请公布号	US2228782(A)	申请公布日期	1941.01.14
申请号	US19400342637	申请日期	1940.06.27
申请人	SHARPLES ALFRED R	发明人	SHARPLES ALFRED R.
分类号	G09B21/00	主分类号	G09B21/00
代理机构		代理人
主权项
地址

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