Improvements in or relating to voice frequency signal receivers,申请号GB19520004729-传众专利搜索

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发明名称	Improvements in or relating to voice frequency signal receivers
摘要
申请公布号	GB704922(A)	申请公布日期	1954.03.03
申请号	GB19520004729	申请日期	1952.02.22
申请人	STANDARD TELEPHONES AND CABLES LIMITED	发明人
分类号	H04Q1/446	主分类号	H04Q1/446
代理机构		代理人
主权项
地址

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