ALEXANDRIA, Va., March 12 -- United States Patent no. D1,066,488, issued on March 11.

"Music theory device" was invented by Xiaoqiang Li (Shenzhen, China).

The patent was filed on Aug. 23, 2024, under Application No. D/959,207.

*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=D1066488&OS=D1066488&RS=D1066488

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