Combination telephone switch and dial,申请号US19540420172-传众专利搜索

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发明名称	Combination telephone switch and dial
摘要
申请公布号	US2794861(A)	申请公布日期	1957.06.04
申请号	US19540420172	申请日期	1954.03.31
申请人	ALLGEMEINE TELEFON-FABRIK G. M. B. H.	发明人	HEINE BRUNO
分类号	H04M1/52;H04M9/00	主分类号	H04M1/52
代理机构		代理人
主权项
地址

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