| 发明名称 |
Projection screen |
| 摘要 |
A projection screen, having a projection surface formed of at least two segments, of which at least two segments are sound radiating segments capable of radiating sound waves from the projection surface and designed to reproduce different frequency ranges.
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| 申请公布号 |
US6369943(B1) |
申请公布日期 |
2002.04.09 |
| 申请号 |
US20000700138 |
申请日期 |
2000.12.22 |
| 申请人 |
HARMAN AUDIO ELECTRONIC SYSTEMS GMBH |
发明人 |
BACHMANN WOLFGANG;KRUMP GERHARD;REGL HANS-JUERGEN |
| 分类号 |
G03B21/56;H04R7/04;(IPC1-7):G03B21/56 |
主分类号 |
G03B21/56 |
| 代理机构 |
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代理人 |
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| 地址 |
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