| 发明名称 |
PERSONAL ALARM DEVICE FOR HEADWEAR FOR PROXIMITY DETECTION SYSTEM |
| 摘要 |
<p>Embodiments described herein relate to an apparatus for attaching elements of a magnetic field safety system to headwear worn by a worker. In various embodiments, the headwear includes a combination of a sounder device, light assembly, personal alarm device and power source.</p> |
| 申请公布号 |
WO2009158471(A1) |
申请公布日期 |
2009.12.30 |
| 申请号 |
WO2009US48615 |
申请日期 |
2009.06.25 |
| 申请人 |
FREDERICK MINING CONTROLS, LLC;FREDERICK, LARRY, D. |
发明人 |
FREDERICK, LARRY, D. |
| 分类号 |
G08B21/00 |
主分类号 |
G08B21/00 |
| 代理机构 |
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