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| Wed 24 Apr 2024
Beijing, April 25 -- Hunan Weisheng Culture Tech has secured a patent on route guiding bulletin board. He Chunhong developed the invention.
The patent application number is CN202321146093U 20230512. The patent publication number is CN219696046 (U). International Patent Classification codes are B65F1/00, B65F1/14, E01F9/615, E..