| 发明名称 |
|
| 摘要 |
|
| 申请公布号 |
GB1290011(A) |
申请公布日期 |
1972.09.20 |
| 申请号 |
GBD1290011 |
申请日期 |
1969.02.11 |
| 申请人 |
|
发明人 |
|
| 分类号 |
H03F1/22;H03F3/193 |
主分类号 |
H03F1/22 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
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