Sound reproducing system,申请号US19270180420-传众专利搜索

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发明名称	Sound reproducing system
摘要
申请公布号	US1931235(A)	申请公布日期	1933.10.17
申请号	US19270180420	申请日期	1927.04.02
申请人	WIRED RADIO, INC.	发明人	NICOLSON ALEXANDER MCLEAN
分类号	H04R3/14	主分类号	H04R3/14
代理机构		代理人
主权项
地址

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