| 发明名称 |
Talking machine |
| 摘要 |
|
| 申请公布号 |
US1852877(A) |
申请公布日期 |
1932.04.05 |
| 申请号 |
US19260118069 |
申请日期 |
1926.06.23 |
| 申请人 |
GRIGSBY-GRUNOW COMPANY |
发明人 |
GARDNER JOHN E. |
| 分类号 |
H04B1/20 |
主分类号 |
H04B1/20 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
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