Telephone switching key,申请号GB19450008640-传众专利搜索

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发明名称	Telephone switching key
摘要
申请公布号	GB592519(A)	申请公布日期	1947.09.19
申请号	GB19450008640	申请日期	1945.04.07
申请人	STANDARD TELEPHONES AND CABLES LIMITED	发明人
分类号	H01H21/02	主分类号	H01H21/02
代理机构		代理人
主权项
地址

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