APPARATUS FOR RECORDING AND REPRODUCING SOUND,申请号CAD299542-传众专利搜索

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发明名称	APPARATUS FOR RECORDING AND REPRODUCING SOUND
摘要
申请公布号	CA299542(A)	申请公布日期	1930.04.22
申请号	CAD299542	申请日期
申请人	THE CANADIAN GENERAL ELECTRIC COMPANY	发明人	ARTHUR C. HARDY
分类号		主分类号
代理机构		代理人
主权项
地址

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