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发明名称
SOUND WAVE CANCELER
摘要
申请公布号
JPH06236189(A)
申请公布日期
1994.08.23
申请号
JP19930021262
申请日期
1993.02.09
申请人
NIPPON TELEGR & TELEPH CORP <NTT>
发明人
IWAZAWA AKIRA;HATAKEYAMA IWAO
分类号
G10K11/16;E04B1/82;G10K11/178;H04R17/00;(IPC1-7):G10K11/16
主分类号
G10K11/16
代理机构
代理人
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