Switching system,申请号US19520269486-传众专利搜索

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发明名称	Switching system
摘要
申请公布号	US2663010(A)	申请公布日期	1953.12.15
申请号	US19520269486	申请日期	1952.02.01
申请人	INTERNATIONAL TELEPHONE AND TELEGRAPH CORPORATION	发明人	BRUNDAGE JOHN H.
分类号	H03F1/54;H04J1/06	主分类号	H03F1/54
代理机构		代理人
主权项
地址

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