US Patent Issued to Nanyang Douguo Import and Export Trading on Aug. 18 for "Pet door flap" (Chinese Inventor)

ALEXANDRIA, Va., Aug. 18 -- United States Patent no. D1,143,100, issued on Aug. 18, was assigned to Nanyang Douguo Import and Export Trading Co. Ltd. (Nanyang City, China).

"Pet door flap" was invented by Jianlin Tang (Nanyang City, China).

The patent was filed on July 31, 2025, under Application No. D/015,850.

*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=D1143100&OS=D1143100&RS=D1143100

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