发明名称 |
Method for reducing receipt of unwanted mail has speech generator activated by light when letterbox flap is opened informing deliverer that advertising material is not wanted |
摘要 |
The letterbox (1) has a light sensor (4) activated when the flap (2) opens the slot (3) and a speech generating chip informs the postman through a loudspeaker that advertising material is not wanted.
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申请公布号 |
DE20300365(U1) |
申请公布日期 |
2003.04.24 |
申请号 |
DE2003200365U |
申请日期 |
2003.01.11 |
申请人 |
HAFT, DIRK |
发明人 |
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分类号 |
A47G29/122;(IPC1-7):A47G29/122;G09F27/00 |
主分类号 |
A47G29/122 |
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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