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经营范围
发明名称
PIEZOELECTRIC SPEAKER
摘要
申请公布号
JPH03143197(A)
申请公布日期
1991.06.18
申请号
JP19890283222
申请日期
1989.10.30
申请人
MATSUSHITA ELECTRIC IND CO LTD
发明人
URA KAZUKI
分类号
H04R17/00
主分类号
H04R17/00
代理机构
代理人
主权项
地址
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