ALEXANDRIA, Va., Feb. 11 -- United States Patent no. D1,111,809, issued on Feb. 10.

"Anti-loosening nut" was invented by Duckgyun Kim (Anseong-si, South Korea).

The patent was filed on Dec. 14, 2023, under Application No. D/520,201.

*For further information, including images, charts and tables, please visit: http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=%2Fnetahtml%2FPTO%2Fsearch-bool.html&r=1&f=G&l=50&co1=AND&d=PTXT&s1=D1111809&OS=D1111809&RS=D1111809

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