Telephone trunking system,申请号US19410391823-传众专利搜索

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发明名称	Telephone trunking system
摘要
申请公布号	US2305968(A)	申请公布日期	1942.12.22
申请号	US19410391823	申请日期	1941.05.05
申请人	KELLOGG SWITCHBOARD AND SUPPLY COMPANY	发明人	KINER GLENN
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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