ALEXANDRIA, Va., Feb. 17 -- United States Patent no. D1,113,389, issued on Feb. 17.

"Escape hammer" was invented by Yafei Qin (Laibin, China).

The patent was filed on May 27, 2024, under Application No. D/944,202.

*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=D1113389&OS=D1113389&RS=D1113389

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