ALEXANDRIA, Va., June 5 -- United States Patent no. D1,070,837, issued on April 15, was assigned to Shenzhen Rockroll Trading Co. Ltd. (Shenzhen, China).
"Twist lock" was invented by Junchao Zhou (Shenzhen, China).
The patent was filed on March 19, 2023, under Application No. D/887,247.
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