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经营范围
发明名称
MULTI-CHANNEL ACTIVE ATTENUATION SYSTEM WITH ERROR SIGNAL INPUTS
摘要
申请公布号
US5216722(A)
申请公布日期
1993.06.01
申请号
US19910794115
申请日期
1991.11.15
申请人
NELSON INDUSTRIES, INC.
发明人
POPOVICH, STEVEN R.
分类号
G10K11/178
主分类号
G10K11/178
代理机构
代理人
主权项
地址
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