ALEXANDRIA, Va., July 21 -- United States Patent no. D1,135,736, issued on July 21, was assigned to Qingdao Maihong Machinery Co. Ltd. (Qingdao, China).
"Trailer hook" was invented by Deli Tao (Qingdao City, China).
The patent was filed on June 6, 2025, under Application No. D/007,111.
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