Schaltungsanordnung fuer mit einer Verstaerkerroehre galvanisch gekoppelte kapazitiveTelephone,申请号DE1925T030045D-传众专利搜索

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发明名称	Schaltungsanordnung fuer mit einer Verstaerkerroehre galvanisch gekoppelte kapazitiveTelephone
摘要
申请公布号	DE498438(C)	申请公布日期	1930.05.22
申请号	DE1925T030045D	申请日期	1925.03.11
申请人	TRI-ERGON HOLDING AKT.-GES.	发明人	MASSOLLE JOSEPH;VOGT HANS;ENGL DR. JOSEF
分类号	H04R19/02	主分类号	H04R19/02
代理机构		代理人
主权项
地址

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