发明名称 |
ELEKTROAKUSTISK OMVANDLARE |
摘要 |
The present invention provides an electro-acoustic transducer including a pair of piezo-electric plastics film diaphragms coupled in a push-pull manner and so arranged as to form a lens-like configuration by a body of a light fibrous material therebetween. The diaphragms are coupled in push-pull manner, and the transducer is especially suitable for use in a telephone instrument. |
申请公布号 |
SE413971(B) |
申请公布日期 |
1980.06.30 |
申请号 |
SE19770010433 |
申请日期 |
1977.09.19 |
申请人 |
* INTERNATIONAL STANDARD ELECTRIC CORPORATION |
发明人 |
W D * CRAGG;A N * LAWSON |
分类号 |
H04R17/00;(IPC1-7):04R17/00 |
主分类号 |
H04R17/00 |
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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