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经营范围
发明名称
CONE SPEAKER
摘要
PURPOSE:To improve sound quality and increase mechanical supporting force by forming cone edge to a required shape using an expandable resin material having alternately varying cell densities.
申请公布号
JPS52101023(A)
申请公布日期
1977.08.24
申请号
JP19760092204
申请日期
1976.08.02
申请人
TOKYO SHIBAURA ELECTRIC CO
发明人
KURIKAWA MAMORU;NITSUTA TSUNEO
分类号
H04R7/20
主分类号
H04R7/20
代理机构
代理人
主权项
地址
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