发明名称 |
Apparatus for timely controlling the sound characteristic of a signaling means of a voice communication device |
摘要 |
An automatic telephone silencer and volume controller having a microprocessor for storing time and volume information and for timely controlling the sound characteristics of a telephone ringer in accordance with the time and volume information stored. The time and volume information may be entered into the microprocessor by a suitable keyboard. Each time entry has associated with it a volume entry so that the telephone will ring at the prescribed volume from that time until the time denoted by the next time entry.
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申请公布号 |
US4644106(A) |
申请公布日期 |
1987.02.17 |
申请号 |
US19850690720 |
申请日期 |
1985.01.10 |
申请人 |
INVENTA ELECTRONICS CO., LTD. |
发明人 |
YEH, KOU-I |
分类号 |
H04M1/663;H04M19/04;(IPC1-7):H04M1/21 |
主分类号 |
H04M1/663 |
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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