| 发明名称 |
NOTICEBOARDS INCORPORATING LOUDSPEAKERS |
| 摘要 |
Visual display apparatus comprising a notice or the like board (48), characterised in that the notice or the like board is a distributed mode acoustic radiator having a transducer (9) mounted wholly and exclusively thereon to vibrate the radiator to cause it to resonate.
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| 申请公布号 |
CA2230234(A1) |
申请公布日期 |
1997.03.13 |
| 申请号 |
CA19962230234 |
申请日期 |
1996.09.02 |
| 申请人 |
NEW TRANSDUCERS LIMITED |
发明人 |
HARRIS, NEIL;AZIMA, HENRY;COLLOMS, MARTIN |
| 分类号 |
H04R1/00;G09F25/00;H04R1/02;H04R7/04;H04R7/06;(IPC1-7):H04R1/02;G09F27/00 |
主分类号 |
H04R1/00 |
| 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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