Vorrichtung zum Abdaempfen von Lauten fuer Mikrotelefone,申请号DE1929T037363D-传众专利搜索

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发明名称	Vorrichtung zum Abdaempfen von Lauten fuer Mikrotelefone
摘要
申请公布号	DE518223(C)	申请公布日期	1931.02.20
申请号	DE1929T037363D	申请日期	1929.08.06
申请人	HARRY CLARENCE TUTTLE	发明人
分类号	H04M1/19	主分类号	H04M1/19
代理机构		代理人
主权项
地址

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