Priority public address system,申请号US19540416060-传众专利搜索

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发明名称	Priority public address system
摘要
申请公布号	US2722566(A)	申请公布日期	1955.11.01
申请号	US19540416060	申请日期	1954.03.15
申请人	AUTOMATIC ELECTRIC LABORATORIES, INC.	发明人	PETERSON EDWARD S.
分类号	H04R27/00	主分类号	H04R27/00
代理机构		代理人
主权项
地址

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