| 发明名称 |
CONE TYPE SPEAKER |
| 摘要 |
PURPOSE:A coating agent added with metal oxide or metal carbide is coated on the surface of a cone, whereby fundamental frequency during free oscillation is increased and resolution is improved. |
| 申请公布号 |
JPS5251930(A) |
申请公布日期 |
1977.04.26 |
| 申请号 |
JP19750127731 |
申请日期 |
1975.10.23 |
| 申请人 |
TORIO KK |
发明人 |
KOGA SHIGEYUKI;ASAHA HIROSHI;OGI KENJI;FURUKAWA TATSU;MAE YUTAKA |
| 分类号 |
H04R7/02;H04R7/12;(IPC1-7):04R7/12 |
主分类号 |
H04R7/02 |
| 代理机构 |
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代理人 |
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| 主权项 |
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| 地址 |
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