| 发明名称 |
PRODUCTION OF DIAPHRAGM FOR SPEAKERS |
| 摘要 |
PURPOSE:Higher modulus of elasticity and lighter weight are achieved by thinning the metal foil base material of a diaphragm shape which forms a boron layer. |
| 申请公布号 |
JPS52121317(A) |
申请公布日期 |
1977.10.12 |
| 申请号 |
JP19760038968 |
申请日期 |
1976.04.06 |
| 申请人 |
MATSUSHITA ELECTRIC IND CO LTD |
发明人 |
INOUE HIDEAKI;TAKEUCHI HIROSHI;KAWABATA HIDEJI;ISHIWATARI KEIZOU |
| 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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| 地址 |
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