ALEXANDRIA, Va., April 21 -- United States Patent no. D1,123,120, issued on April 21.

"Link structure of metal pipe" was invented by Chao Zhang (Dongyang, China).

The patent was filed on March 6, 2025, under Application No. D/992,253.

*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=D1123120&OS=D1123120&RS=D1123120

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