Acoustic studio with variable reverberation time,申请号US19480024203-传众专利搜索

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发明名称	Acoustic studio with variable reverberation time
摘要
申请公布号	US2542663(A)	申请公布日期	1951.02.20
申请号	US19480024203	申请日期	1948.04.30
申请人	RADIO CORPORATION OF AMERICA	发明人	GRAHAM GEORGE K.
分类号	G10K15/10	主分类号	G10K15/10
代理机构		代理人
主权项
地址

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