| 发明名称 |
Frequency indicator for receiving devices |
| 摘要 |
A liquid crystal display panel for indicating operating frequency of a receiver is operated by a circuit providing digital control signals and an alternating current signal.
|
| 申请公布号 |
US4040719(A) |
申请公布日期 |
1977.08.09 |
| 申请号 |
US19750597644 |
申请日期 |
1975.07.21 |
| 申请人 |
SCHIEBELHUTH, HEINZ F. |
发明人 |
SCHIEBELHUTH, HEINZ F. |
| 分类号 |
H03J1/04;H03J3/14;(IPC1-7):G02F1/28;H04B1/16 |
主分类号 |
H03J1/04 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
