| 发明名称 |
DIAPHRAGM FOR SPEAKER |
| 摘要 |
PURPOSE:To obtain a diaphragm of low Q-value and good mechanical property, which is especially good for the high and middle keys and can be easily manipulated, by making precipitation of a carbide or nitride whose composition varies with the thickness on the substrate. |
| 申请公布号 |
JPS5232315(A) |
申请公布日期 |
1977.03.11 |
| 申请号 |
JP19750107754 |
申请日期 |
1975.09.05 |
| 申请人 |
NIPPON MUSICAL INSTRUMENTS MFG |
发明人 |
SUZUKI KUNIO;TOKUSHIMA TADAO;SUZUKI YOSHIFUMI |
| 分类号 |
H04R7/02;(IPC1-7):04R7/02 |
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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