Electrical signal transmission system,申请号GB19420009540-传众专利搜索

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发明名称	Electrical signal transmission system
摘要
申请公布号	GB554786(A)	申请公布日期	1943.07.19
申请号	GB19420009540	申请日期	1942.07.09
申请人	INTERNATIONAL STANDARD ELECTRIC CORPORATION	发明人
分类号	H04Q1/442;H04Q3/00	主分类号	H04Q1/442
代理机构		代理人
主权项
地址

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