Automatic telephone exchange having some lines connected to two selector stages and some lines connected to only one selector stage,申请号US19640382233-传众专利搜索

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发明名称	Automatic telephone exchange having some lines connected to two selector stages and some lines connected to only one selector stage
摘要
申请公布号	US3342946(A)	申请公布日期	1967.09.19
申请号	US19640382233	申请日期	1964.07.13
申请人	NORTH AMERICAN PHILIPS COMPANY, INC.	发明人	BROUWER JOHANNES MARTINUS;GRUBBEN HENRI PETER JOHANNES
分类号	H04Q3/00	主分类号	H04Q3/00
代理机构		代理人
主权项
地址

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