US Patent Issued to Beijing Roborock Technology on Aug. 25 for "Extension tube for vacuum cleaner" (Chinese Inventor)

ALEXANDRIA, Va., Aug. 25 -- United States Patent no. D1,145,248, issued on Aug. 25, was assigned to Beijing Roborock Technology Co. Ltd. (Beijing).

"Extension tube for vacuum cleaner" was invented by Zechen Yu (Beijing).

The patent was filed on Feb. 8, 2025, under Application No. D/524,207.

*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=D1145248&OS=D1145248&RS=D1145248

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