| 发明名称 |
Optical sound level display has graphical and traffic light display |
| 摘要 |
<p>An optical sound level display is battery (7) or mains powered has an adjustable microphone (6) sound receiver and green (1), yellow (2), red (3) traffic light style display linked to graphical sound level display (5) and computer (9) Internet link to other classrooms.</p> |
| 申请公布号 |
DE20306985(U1) |
申请公布日期 |
2003.08.07 |
| 申请号 |
DE2003206985U |
申请日期 |
2003.05.05 |
| 申请人 |
HECKHAUSEN, WOLFGANG;HASTEDT, KAREN |
发明人 |
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| 分类号 |
G01H3/10;G09B23/14;(IPC1-7):G09B23/06;G01H3/00 |
主分类号 |
G01H3/10 |
| 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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