| 发明名称 |
Pick-up |
| 摘要 |
|
| 申请公布号 |
US2145389(A) |
申请公布日期 |
1939.01.31 |
| 申请号 |
US19360102303 |
申请日期 |
1936.09.24 |
| 申请人 |
WEBSTER ELECTRIC COMPANY |
发明人 |
DALLY ROY |
| 分类号 |
G11B3/14;H04R17/04 |
主分类号 |
G11B3/14 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
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