| 发明名称 |
CALL BACK METHD OF AN ELECTRODE SWITCHBOARD |
| 摘要 |
PURPOSE:To go to call back by dialing of the selected extention phone, after the office line dividing. |
| 申请公布号 |
JPS51132910(A) |
申请公布日期 |
1976.11.18 |
| 申请号 |
JP19750056734 |
申请日期 |
1975.05.15 |
| 申请人 |
TOKYO SHIBAURA ELECTRIC CO |
发明人 |
FUKUDA TAKEO;HANAWA KAZUHIKO;URUI KIYOSHI |
| 分类号 |
H04M3/58;H04M3/48;H04Q3/545 |
主分类号 |
H04M3/58 |
| 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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