| 发明名称 |
TRASDUTTORE ELETTROACUSTICO..PROCEDIMENTO PER LA SUA FABBRICAZIONE E DISPOSITIVO PER L ATTUAZIONE DEL PROCEDIMENTO |
| 摘要 |
An electro-acoustic transducer having a chassis with a plastic contact surface for attachment of a vibratory diaphragm. The diaphragm is attached by an ultrasonic weld between the contact surface on the chassis and the edge of the vibratory part. |
| 申请公布号 |
IT1059937(B) |
申请公布日期 |
1982.06.21 |
| 申请号 |
IT19760068031 |
申请日期 |
1976.04.28 |
| 申请人 |
PHILIPS NV |
发明人 |
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| 分类号 |
H04R9/02;B29C65/08;B29C65/78;H04R7/18;H04R9/04;H04R31/00 |
主分类号 |
H04R9/02 |
| 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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