Schaltungsanordnung fuer Selbstanschluss-Fernsprechanlagen,申请号DE1928W080057D-传众专利搜索

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发明名称	Schaltungsanordnung fuer Selbstanschluss-Fernsprechanlagen
摘要
申请公布号	DE521472(C)	申请公布日期	1931.03.26
申请号	DE1928W080057D	申请日期	1928.08.02
申请人	HAROLD LYNWOOD WARWICK	发明人
分类号	H04M1/57	主分类号	H04M1/57
代理机构		代理人
主权项
地址

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