Microphone pour la modulation de courants intenses,申请号FRD857425-传众专利搜索

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发明名称	Microphone pour la modulation de courants intenses
摘要
申请公布号	FR857425(A)	申请公布日期	1940.09.12
申请号	FRD857425	申请日期	1939.07.06
申请人	GUY R. FOUNTAIN, LIMITED	发明人	COURTENAY SNELL ALFRED, EDWARD,;RUPERT FOUNTAIN GUY,
分类号	H04R21/02	主分类号	H04R21/02
代理机构		代理人
主权项
地址

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