Method of and apparatus for automatically measuring sound transmission characteristics of a room,申请号US19600066597-传众专利搜索

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发明名称	Method of and apparatus for automatically measuring sound transmission characteristics of a room
摘要
申请公布号	US3156316(A)	申请公布日期	1964.11.10
申请号	US19600066597	申请日期	1960.11.01
申请人	BELL TELEPHONE LABORATORIES, INCORPORATED	发明人	BARNEY HAROLD L.;GARDNER MARK B.
分类号	G01H7/00	主分类号	G01H7/00
代理机构		代理人
主权项
地址

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