Einrichtung zur Verbesserung der Schallaufnahme von Mikrophonen, die mit mehreren Membranen versehen sind.,申请号CHD162298-传众专利搜索

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发明名称	Einrichtung zur Verbesserung der Schallaufnahme von Mikrophonen, die mit mehreren Membranen versehen sind.
摘要
申请公布号	CH162298(A)	申请公布日期	1933.06.15
申请号	CHD162298	申请日期	1932.03.29
申请人	N. V. PHILIPS' GLOEILAMPENFABRIEKEN	发明人	GLOEILAMPENFABRIEKEN N. V. PHILIPS'
分类号		主分类号
代理机构		代理人
主权项
地址

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