Automatic switch for use in telephone or like systems,申请号US19370180686-传众专利搜索

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发明名称	Automatic switch for use in telephone or like systems
摘要
申请公布号	US2262446(A)	申请公布日期	1941.11.11
申请号	US19370180686	申请日期	1937.12.20
申请人	ASSOCIATED TELEPHONE & TELEGRAPH COMPANY	发明人	BEALE CHARLES EDMUND;RICHARDS IDRIS TREVOR
分类号	H04Q3/00	主分类号	H04Q3/00
代理机构		代理人
主权项
地址

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