Crossbar switching apparatus,申请号US19390298382-传众专利搜索

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发明名称	Crossbar switching apparatus
摘要
申请公布号	US2299525(A)	申请公布日期	1942.10.20
申请号	US19390298382	申请日期	1939.10.07
申请人	WESTERN ELECTRIC COMPANY, INCORPORATED	发明人	CHRISTENSEN LOUIS H.
分类号	H01H67/26	主分类号	H01H67/26
代理机构		代理人
主权项
地址

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