Electrodynamic magnet system for microphones, loudspeakers, or similar devices,申请号US19280259445-传众专利搜索

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发明名称	Electrodynamic magnet system for microphones, loudspeakers, or similar devices
摘要
申请公布号	US2006847(A)	申请公布日期	1935.07.02
申请号	US19280259445	申请日期	1928.03.06
申请人	RADIO CORPORATION OF AMERICA	发明人	VERMEULEN ROELOF;URK AREND THOMAS VAN
分类号	H04R9/04	主分类号	H04R9/04
代理机构		代理人
主权项
地址

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