Microphone,申请号US19430502076-传众专利搜索

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法人/股东/高管

发明名称	Microphone
摘要
申请公布号	US2626380(A)	申请公布日期	1953.01.20
申请号	US19430502076	申请日期	1943.09.11
申请人	STEDMAN CECIL K;SMITH FREDERICK H	发明人	STEDMAN CECIL K.;SMITH FREDERICK H.
分类号	H04R15/00	主分类号	H04R15/00
代理机构		代理人
主权项
地址

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