APARTMENT HOUSE TELEPHONE SYSTEM,申请号USD3557318-传众专利搜索

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发明名称	APARTMENT HOUSE TELEPHONE SYSTEM
摘要
申请公布号	US3557318(A)	申请公布日期	1971.01.19
申请号	USD3557318	申请日期	1966.09.29
申请人	AMERICAN TELEPHONE AND TELEGRAPH CO.	发明人	JOHN J. BUONSANTE;NORMAN J. SYVERTSEN
分类号	H04M11/02;(IPC1-7):H04M11/00	主分类号	H04M11/02
代理机构		代理人
主权项
地址

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