Key telephone system for subscribers,申请号US05/882104-传众专利搜索

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发明名称	Key telephone system for subscribers
摘要
申请公布号	USRE29884(E1)	申请公布日期	1979.01.16
申请号	US05/882104	申请日期	1978.02.28
申请人		发明人
分类号		主分类号
代理机构		代理人
主权项
地址

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