发明名称 |
TRAFFIC CONTROL LIGHT WITH MEANS RESPONSIVE TO A POWER FAILURE |
摘要 |
A traffic control light is provided with a supplemental lamp which is illuminable by a secondary power source. Switching means are also provided which are responsive to a failure of the primary power source to connect the supplemental lamp to the secondary source so that the supplemental lamp is illuminated in a flashing mode to continue traffic control.
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申请公布号 |
US3641487(A) |
申请公布日期 |
1972.02.08 |
申请号 |
USD3641487 |
申请日期 |
1969.10.29 |
申请人 |
LUMIDOR PRODUCTS CORP. |
发明人 |
JOHN J. ROGERS;JOHN A. STRATMAN |
分类号 |
G08G1/09;G08G1/097;(IPC1-7):G08G1/09 |
主分类号 |
G08G1/09 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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