Electrical signaling system,申请号US19380235746-传众专利搜索

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发明名称	Electrical signaling system
摘要
申请公布号	US2282271(A)	申请公布日期	1942.05.05
申请号	US19380235746	申请日期	1938.10.19
申请人	ASSOCIATED TELEPHONE AND TELEGRAPH COMPANY	发明人	TERRONI TESEO BRUNO DANTE;MCCUSKER JOSEPH BERNARD
分类号	H04Q1/45	主分类号	H04Q1/45
代理机构		代理人
主权项
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