| 发明名称 |
Electret microphone |
| 摘要 |
An electret microphone (10) comprises an electret diaphragm (11) having a thin metallic layer (13) deposited on one of its major surfaces. A ring-shaped metal washer (20) bonded to the metallic layer (13) of the diaphragm (11) by means of a lightly metal-filled adhesive (21).
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| 申请公布号 |
US4891843(A) |
申请公布日期 |
1990.01.02 |
| 申请号 |
US19830469489 |
申请日期 |
1983.02.24 |
| 申请人 |
AT&T TECHNOLOGIES, INC. |
发明人 |
PAULUS, JR., FRANK S.;TUAH-POKU, ISAAC |
| 分类号 |
H04R19/00;H04R19/01;H04R31/00 |
主分类号 |
H04R19/00 |
| 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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