ALEXANDRIA, Va., April 15 -- United States Patent no. D1,122,247, issued on April 14, was assigned to HANGZHOU DUKANG TECHNOLOGY Co. LTD. (Hangzhou, China).
"Braille display" was invented by Xiang Ying (Hangzhou, China) and Longmin Chen (Hangzhou, China).
The patent was filed on Nov. 7, 2022, under Application No. D/859,088.
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