| 发明名称 |
DIAPHRAGM FOR SPEAKER |
| 摘要 |
<p>PURPOSE:To provide a diaphragm for a dynamic cone speaker, in which a foamed metal is used to increase the ratio of rigidity to the weight.</p> |
| 申请公布号 |
JPS5278425(A) |
申请公布日期 |
1977.07.01 |
| 申请号 |
JP19750155394 |
申请日期 |
1975.12.24 |
| 申请人 |
SANYO DENKI KK;TOKYO SANYO DENKI KK |
发明人 |
ISHII YASUHIRO;HIROSE SHINTAROU;KAWASAKI RIYOUICHI |
| 分类号 |
H04R7/02;H04R7/12;H04R31/00 |
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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