One-policeman warning device in guard duty of policemen
The utility model discloses a one-policeman warning device in the guard duty of a policeman. The device comprises a lampshade, a battery power system and a fixing device, wherein a luminous tube is arranged in the lampshade; the interior of the luminous tube is filled with gas that can give off red...
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Format: | Patent |
Sprache: | chi ; eng |
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