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公开(公告)号：US11598058B2
公开(公告)日：2023-03-07
申请号：US16410087
申请日：2019-05-13
Applicant: ASUSTeK COMPUTER INC.
Inventor： Yen-Chun Lee , Hung-Ling Chen
Abstract: The invention provides a warning sign device. The warning sign device comprises a sign body and a continuous track assembly. The continuous track assembly is disposed on the sign body.
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