| 发明名称 |
DOOR PHONE WITH TELEPHONE FUNCTION |
| 摘要 |
PROBLEM TO BE SOLVED: To converse with a visitor even in absence. SOLUTION: A door phone is equipped with a function of calling a visiting place.
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| 申请公布号 |
JP2001345943(A) |
申请公布日期 |
2001.12.14 |
| 申请号 |
JP20000201596 |
申请日期 |
2000.05.30 |
| 申请人 |
TSUDO YASUHIRO |
发明人 |
TSUDO YASUHIRO |
| 分类号 |
H04M1/00;H04M9/00;(IPC1-7):H04M9/00 |
主分类号 |
H04M1/00 |
| 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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