| 发明名称 |
AUTOMATIC BROADCAST EQUIPMENT FOR RAILROAD PASSENGERS |
| 摘要 |
PURPOSE:To contribute to promotion of labor saving program at railway station with use of economical and highly durable automatic broadcast equipment which employs highly flexible and dependable magnetic disk. |
| 申请公布号 |
JPS5278306(A) |
申请公布日期 |
1977.07.01 |
| 申请号 |
JP19750155355 |
申请日期 |
1975.12.25 |
| 申请人 |
NIPPON SIGNAL CO LTD |
发明人 |
OOSUGI YUTAKA;KITAMURA KAORU |
| 分类号 |
B61B1/02;H04H20/00;H04H20/62;H04H60/07;H04R27/00 |
主分类号 |
B61B1/02 |
| 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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