Tower number plate device convenient to monitor
A pole and tower number plate device convenient to monitor is arranged at the top end of a pole and tower and is characterized in that the back face of an obliquely-arranged pole and tower number plate is connected with a vertical inner hollow pipe, the inner hollow pipe is sleeved with an outer hol...
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Hauptverfasser: | , , , , , , , , , , , , , , , |
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Format: | Patent |
Sprache: | chi ; eng |
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