ALEXANDRIA, Va., Sept. 10 -- United States Patent no. 12,409,526, issued on Sept. 9, was assigned to Hangzhou Weikai e-commerce Co. Ltd. (Hangzhou, China).
"Electric knife sharpener" was invented by Shuchun Cai (Wenzhou, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "The disclosure relates to an electric knife sharpener, including: a first grinding structure, the first grinding structure including a plurality of first grinding wheels which are parallel to each other and configured to sharpen a knife, and adjacent first grinding wheels being arranged spaced apart from each other; a second grinding structure, the second grinding structure including a plurality of second grinding wheels which are parallel...