发明名称 |
SEMIIAUTOMATIC MORNING CALL SYSTEM |
摘要 |
PURPOSE:To enable to cope with the reservations concentrated to one time band for the system and to remarkably reduce the number of units, by operating a plurality of time detection relays at a time band and by operating the connector relays corresponded at a time with a given distance sequentially and repeatedly. |
申请公布号 |
JPS53127211(A) |
申请公布日期 |
1978.11.07 |
申请号 |
JP19770041573 |
申请日期 |
1977.04.13 |
申请人 |
HITACHI LTD |
发明人 |
HANADA GOROU;MINOSHIMA TSUTOMU |
分类号 |
H04M3/42;H04M3/432;H04M3/60 |
主分类号 |
H04M3/42 |
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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