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发明名称
ACTIVE ACOUSTIC ATTENUATION SYSTEM FOR HIGHER ORDER MODE NON-UNIFORM SOUND FIELD IN A DUCT
摘要
申请公布号
EP0333461(A3)
申请公布日期
1990.03.14
申请号
EP19890302561
申请日期
1989.03.15
申请人
NELSON INDUSTRIES, INC.
发明人
ERIKSSON, LARRY J.;ALLIE, MARK C.;HOOPS, RICHARD H.
分类号
H04R3/00;G10K11/178;(IPC1-7):G10K11/16
主分类号
H04R3/00
代理机构
代理人
主权项
地址
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