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经营范围
发明名称
ELECTRONIC NOISE ATTENTUATION SYSTEM
摘要
申请公布号
GB8904719(D0)
申请公布日期
1989.04.12
申请号
GB19890004719
申请日期
1989.03.02
申请人
HITACHI PLANT ENGINEERING & CONSTRUCTION CO LTD;HAMADA, HAREO;MIURA, TANETOSHI
发明人
分类号
H04R3/00;G10K11/178
主分类号
H04R3/00
代理机构
代理人
主权项
地址
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