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发明名称
PIEZOELECTRIC TYPE SOUNDING BODY
摘要
申请公布号
JPH03228500(A)
申请公布日期
1991.10.09
申请号
JP19900024122
申请日期
1990.02.01
申请人
NEC CORP
发明人
IKEDA TERUYUKI
分类号
H04R17/10
主分类号
H04R17/10
代理机构
代理人
主权项
地址
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