Improvements in voice translating microphones,申请号GB19390025036-传众专利搜索

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发明名称	Improvements in voice translating microphones
摘要
申请公布号	GB536969(A)	申请公布日期	1941.06.04
申请号	GB19390025036	申请日期	1939.08.31
申请人	EMIL HENRY GREIBACH	发明人
分类号	H04R1/14;H04R1/46;H04R9/00;H04R9/08;H04R11/00;H04R11/04	主分类号	H04R1/14
代理机构		代理人
主权项
地址

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