ALEXANDRIA, Va., July 9 -- United States Patent no. 12,349,813, issued on July 8, was assigned to GUANGZHOU PRODIGY DAILY-PRODUCTION Co. LTD (Guangzhou, China).
"Playpen with automatic locking function" was invented by Zhanpeng Liang (Guangdong, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure provides a playpen with an automatic locking function, comprising a top cover; an inner sliding rod, the inner sliding rod being mounted below the top cover and provided with a cylindrical receiving cavity, and first sliding grooves communicated with the cylindrical receiving cavity being formed in two sides of the inner sliding rod; a knob, the knob being mounted in the top cover and clamped...