| 发明名称 |
Compass alarm |
| 摘要 |
|
| 申请公布号 |
US2118082(A) |
申请公布日期 |
1938.05.24 |
| 申请号 |
US19360064207 |
申请日期 |
1936.02.17 |
| 申请人 |
HAMMOND JR JOHN HAYS |
发明人 |
JR. JOHN HAYS HAMMOND, |
| 分类号 |
G01C17/26 |
主分类号 |
G01C17/26 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
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